{"product_id":"inodoro-roca-ona-rimless-tanque-bajo-blanco-brillo","title":"Roca Ona Rimless Low-Tank Toilet | Dual Outlet | Wall-Hung Design | White","description":"\u003ch2\u003eThe Hygiene Problem Hidden Inside Every Traditional Toilet — And How Rimless Technology Solves It\u003c\/h2\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThere is a feature present on virtually every traditional toilet that most people clean around, over, and under for years without ever thinking about what it actually is or why it exists. It is the interior rim — the projecting ledge of ceramic that runs around the inside of the bowl just below the waterline, through which flush water is distributed around the bowl surface during each flush.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe rim is not a design choice. It is an engineering constraint from an earlier era of toilet design, when the only available method for distributing flush water around the full interior surface of the bowl was to create a horizontal channel running around the circumference of the bowl through which water could flow. The rim houses this channel. The flush water enters the rim channel and exits through apertures or perforations distributed around its underside, directing water down the bowl surface.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe problem is that the rim creates a permanently enclosed space — a cavity with multiple openings, a horizontal surface, and areas that are physically inaccessible to a toilet brush — in a location that is continuously exposed to contamination from every flush. Aerosolised water droplets, mineral scale from the water supply, and biological deposits accumulate in the rim channel and on the underside of the rim ledge with every use. Standard cleaning tools cannot reach these surfaces. Standard cleaning products that are applied to the visible bowl surface do not penetrate the enclosed rim geometry.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe result is a pattern that will be familiar to anyone who has ever removed a toilet seat and looked carefully at the underside of a traditional rim: discolouration, scale deposits, biological film accumulation, and the beginning of staining that no amount of visible bowl cleaning will address, because the source of the contamination is not the visible bowl surface — it is the inaccessible rim cavity.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003e\u003cstrong\u003eRimless technology eliminates the rim entirely.\u003c\/strong\u003e The Roca Ona Rimless uses a completely different water distribution architecture — one that addresses the flush distribution problem without creating an enclosed, inaccessible cavity. The result is a toilet whose entire interior surface is directly accessible for cleaning, and whose flush system is engineered to deliver superior coverage without the hygiene liability of the traditional rim.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThis is not a minor refinement. It is a fundamental redesign of one of the most used and least considered elements in the modern bathroom.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cdiv class=\"relative group\/csv w-fit\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoca\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCollection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTechnology\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRimless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLow-tank toilet, floor-standing, wall-hung\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (bowl)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e37 cm wide × 60 cm deep × 78.5 cm high\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutlet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDual — horizontal or vertical evacuation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFloor-standing, attached to wall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlush system\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDrag-type discharge with internal water distributor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCistern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOptional — Roca Ona dual flush 4.5\/3 litres (bottom or side feed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeat\/Lid material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSupralit® antibacterial resin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeat dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e36.3 cm wide × 41.7 cm deep × 4.5 cm high\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFixing holes distance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeat hinges\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStainless steel, easy-clean design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEvacuation elbow and fixing kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU (bowl)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA342688000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU (cistern, bottom feed)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA341681000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU (cistern, side feed)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA341680000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU (seat, standard)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA801E20001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU (seat, soft-close)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA801E22001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEAN\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8433290195781\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv data-gramm=\"false\" class=\"absolute top-[2px] right-0 group-hover\/csv:block hidden z-10\"\u003e\u003cspan data-state=\"closed\"\u003e\u003cbutton class=\"outline-hidden! relative select-none block cursor-pointer rounded px-[10px] py-[6px] aasm:px-[16px] aasm:py-[5px]  text-bwleftblue   bg-bwleftblue\/10 hover:bg-bwleftblue\/20    px-[7px]! py-0! border border-bwleftblue\/10 bg-darkcoloro! dark:border-darkcolor\/10! dark:!text-border-darkcolor\/[0.4]\" tabindex=\"0\"\u003e\u003csvg data-prefix=\"fas\" data-icon=\"download\" class=\"svg-inline--fa fa-download\" role=\"img\" viewBox=\"0 0 448 512\" aria-hidden=\"true\" font-size=\"13\"\u003e\u003cpath fill=\"currentColor\" d=\"M256 32c0-17.7-14.3-32-32-32s-32 14.3-32 32l0 210.7-41.4-41.4c-12.5-12.5-32.8-12.5-45.3 0s-12.5 32.8 0 45.3l96 96c12.5 12.5 32.8 12.5 45.3 0l96-96c12.5-12.5 12.5-32.8 0-45.3s-32.8-12.5-45.3 0L256 242.7 256 32zM64 320c-35.3 0-64 28.7-64 64l0 32c0 35.3 28.7 64 64 64l320 0c35.3 0 64-28.7 64-64l0-32c0-35.3-28.7-64-64-64l-46.9 0-56.6 56.6c-31.2 31.2-81.9 31.2-113.1 0L110.9 320 64 320zm304 56a24 24 0 1 1 0 48 24 24 0 1 1 0-48z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/button\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch2\u003eHow the Rimless System Works: Internal Water Distributor and Drag-Type Discharge\u003c\/h2\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eUnderstanding why the Ona Rimless represents a genuine engineering advance requires understanding how its flush system differs from the traditional rim model — and what specific design choices replace the functions that the rim previously performed.\u003c\/p\u003e\n\u003ch3\u003eThe Internal Water Distributor\u003c\/h3\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eIn a traditional toilet, the rim channel serves as both the water delivery pathway and the water distribution mechanism: flush water travels through the channel, exits through the rim perforations, and flows down the bowl surface by gravity. The distribution of water coverage across the bowl surface depends on the positioning and size of the rim perforations, and the flow path follows the rim geometry — which means the coverage pattern is constrained by the physical shape and condition of the rim channel itself.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe Roca Ona Rimless replaces this system with an \u003cstrong\u003einternal water distributor\u003c\/strong\u003e — a purpose-designed component integrated into the bowl geometry that directs flush water in a controlled, defined pattern across the entire interior bowl surface without requiring a rim channel to do so. The distributor is positioned to create a powerful, uniform flush that reaches the full bowl surface from the point where water enters the bowl.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe key difference is that the water distribution mechanism is engineered as a deliberate, controlled system rather than as a consequence of water following the path of least resistance through a peripheral channel. The coverage is designed in — not left to the variability of rim geometry and condition. The result is a flush that Roca describes as powerful and uniform, without the splashing that can occur when flush water exits rim perforations at angles that direct water upward rather than down the bowl surface.\u003c\/p\u003e\n\u003ch3\u003eDrag-Type Discharge\u003c\/h3\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe Ona uses a \u003cstrong\u003edrag-type unloading system\u003c\/strong\u003e — a flush mechanism in which water enters the bowl in a direction that creates a strong hydraulic drag effect, pulling waste material and contaminated water toward the outlet rather than relying solely on the volume of water delivered to achieve evacuation.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eDrag-type flush systems are recognised for their effectiveness in achieving complete bowl evacuation with a relatively modest water volume — a characteristic that is directly relevant to the Ona's dual-flush cistern specification of 4.5\/3 litres. The drag effect means that the 3-litre partial flush is capable of achieving effective bowl clearance for liquid waste, because the hydraulic action of the water entry augments the purely volumetric flushing effect. At 4.5 litres for solid waste, the drag system achieves thorough bowl clearance with a water volume that is meaningfully below the 6–9 litre flush volumes of older toilet designs.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe combination of the internal water distributor and the drag-type discharge system produces a toilet whose flush performance is engineered from first principles, not derived from the constraints of an inherited design. Every aspect of the water delivery and bowl evacuation is a deliberate design choice — and the absence of the rim means there is no inaccessible cavity where the consequences of any performance shortfall can accumulate unseen.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Rimless Matters for Real-World Bathroom Hygiene\u003c\/h2\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe practical implications of rimless technology extend beyond the flush mechanics. The most significant day-to-day benefit of a rimless toilet is the change it makes to the cleaning routine — specifically, to what can actually be cleaned and how thoroughly.\u003c\/p\u003e\n\u003ch3\u003eEvery Surface Is Directly Accessible\u003c\/h3\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eIn a rimless bowl, every interior surface is visible and reachable from the top of the bowl. The toilet brush can reach the full bowl surface in a single cleaning motion without needing to angle under a rim overhang or reach into a channel cavity. Visual inspection can confirm that the cleaning is complete — there is no enclosed area where deposits can accumulate out of sight.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThis accessibility is not only about convenience. It is about the actual microbiological condition of the toilet between cleaning sessions. A surface that can be effectively cleaned with standard tools and standard products will maintain a lower level of biological and mineral contamination than a surface with inaccessible cavities that resist cleaning regardless of the effort applied. The rim is, in practical terms, a permanent reservoir for the contamination that every flush generates — a reservoir that a rimless design simply does not have.\u003c\/p\u003e\n\u003ch3\u003eReduced Scale and Mineral Deposit Accumulation\u003c\/h3\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe enclosed rim channel of a traditional toilet is a location where flush water is in prolonged contact with the ceramic surface — flowing through the channel for the duration of each flush and then leaving residual water to evaporate and deposit minerals. In hard water areas, this process progressively deposits calcium carbonate in the rim channel, reducing the effective diameter of the perforations over time and eventually changing the distribution pattern of the flush — directing water at angles that were not intended in the original design.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eIn a rimless bowl, flush water contacts the bowl surface directly and drains immediately through the outlet. There is no enclosed channel where residual water can pool and evaporate. The mineral scale accumulation that progressively degrades traditional rim function over the years of installation is not a factor in a rimless design.\u003c\/p\u003e\n\u003ch3\u003eUniform Hygiene Across the Entire Bowl Surface\u003c\/h3\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe internal water distributor of the Ona Rimless is designed to deliver flush water to the full bowl surface uniformly — not to the portions of the bowl surface below rim perforations only. In traditional rim toilets, the coverage pattern of the flush is determined by the positions and conditions of the rim perforations, which may not deliver uniform coverage to all areas of the bowl, particularly around the front bowl area where the rim geometry may not provide direct water delivery.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe Ona's distributor provides coverage by design to the complete bowl surface, supporting the even distribution of fresh water that makes each flush effective at maintaining a clean bowl surface between dedicated cleaning sessions.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eDual Outlet: The Installation Flexibility That Changes Everything in Renovation\u003c\/h2\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eOne of the most practically significant specifications of the Roca Ona Rimless is its \u003cstrong\u003edual outlet\u003c\/strong\u003e — the ability to connect the toilet's evacuation pipe to either a horizontal or vertical drainage point in the floor or wall.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThis specification is critical in the context of bathroom renovation, which represents the majority of toilet installations in existing residential properties. Renovation projects do not offer the freedom of new construction — the drainage pipe is already positioned at a fixed location, and the toilet must work with that location. The drainage arrangement in European residential construction is not standardised: different construction eras, different building traditions, and different original specification choices produce an enormous variety of drainage pipe positions and orientations in existing bathrooms.\u003c\/p\u003e\n\u003ch3\u003eHorizontal Outlet\u003c\/h3\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eA horizontal outlet connects the toilet to a drainage pipe that exits through the rear wall of the toilet installation area — typically positioned at or near floor level in the wall behind where the toilet sits. This drainage arrangement is common in construction traditions where the soil pipe runs within the wall structure rather than through the floor slab.\u003c\/p\u003e\n\u003ch3\u003eVertical Outlet\u003c\/h3\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eA vertical outlet connects the toilet to a drainage pipe that exits downward through the floor — the drainage arrangement typical in construction where the soil pipe runs below the floor slab and connects upward to the toilet outlet.\u003c\/p\u003e\n\u003ch3\u003eWhy Dual Outlet Compatibility Matters\u003c\/h3\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eA toilet that is specified for only one outlet type is incompatible with approximately half of all existing drainage arrangements in European residential construction. Specifying a toilet with dual outlet compatibility means the product can be installed in either drainage configuration without modifications to the drainage system — the included evacuation elbow provides the connection geometry for whichever outlet orientation the existing drainage requires.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eFor renovation projects, dual outlet compatibility means the toilet can be selected on the basis of its design, hygiene, and performance credentials — not constrained by the drainage arrangement that happens to be present. The Roca Ona Rimless with its dual outlet specification is compatible with the full range of European residential drainage configurations.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe \u003cstrong\u003eevacuation elbow and fixing kit\u003c\/strong\u003e included with the toilet provide the complete connection hardware for installation, regardless of the outlet orientation used.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eFloor-Standing, Wall-Hung: Understanding the Installation Type\u003c\/h2\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe Roca Ona Rimless uses a specific installation format that deserves explanation, because it combines elements that are sometimes confused with purely wall-mounted (suspended) toilet installation: it is \u003cstrong\u003efloor-standing\u003c\/strong\u003e but \u003cstrong\u003ewall-hung\u003c\/strong\u003e — meaning the toilet bowl rests on the floor and takes its structural load through its base, while also being attached to the wall for stability.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThis is distinct from the suspended wall-hung toilet format, in which the bowl is attached to a concealed carrier frame within the wall and has no contact with the floor at all. The floor-standing wall-hung format of the Ona means:\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003e\u003cstrong\u003eSimpler installation\u003c\/strong\u003e: No concealed carrier frame is required. The toilet installs against the wall using the included fixing kit, which secures it to the wall surface for stability without requiring a structural frame within the wall.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003e\u003cstrong\u003eStandard cistern\u003c\/strong\u003e: The Ona uses a conventional low-level cistern positioned directly on top of or adjacent to the toilet bowl — visible, accessible, and serviceable without opening a false wall. The optional Roca Ona cistern is a standard external cistern, not a concealed in-wall cistern.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003e\u003cstrong\u003eAccessible plumbing\u003c\/strong\u003e: All connections — water supply, outlet drainage, cistern mechanisms — are made at standard accessible positions and can be serviced by a plumber without specialist equipment or wall access.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003e\u003cstrong\u003eBroad installation compatibility\u003c\/strong\u003e: Because the toilet rests on the floor and attaches to the wall surface, it can be installed in virtually any bathroom configuration where floor space and rear wall access are present. There is no requirement for a structural carrier frame, no requirement for a reinforced wall section, and no minimum floor void depth.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThis installation format makes the Ona Rimless particularly well-suited to renovation contexts where the bathroom structure was not designed for a concealed-cistern wall-hung installation — the format that now dominates the premium bathroom market but requires specific structural preparation that many existing bathrooms do not have.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eThe Roca Ona Cistern: Dual Flush and Connection Options\u003c\/h2\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe optional \u003cstrong\u003eRoca Ona cistern\u003c\/strong\u003e is specified with a \u003cstrong\u003edual flush 4.5\/3 litre\u003c\/strong\u003e system — the two-button format that allows the user to select the appropriate flush volume for the waste type, with the smaller 3-litre flush for liquid waste and the full 4.5-litre flush for solid waste.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe water saving implications of the dual flush system across a typical household use pattern are significant. A standard single-flush toilet typically delivers 6–9 litres per flush regardless of the requirement. Replacing this with a 4.5\/3 litre dual flush system reduces the average flush volume — assuming approximately 60% of flushes are at the smaller volume — to an effective average of approximately 3.6 litres per flush. Across the typical 4–6 flushes per person per day in a household, the annual water saving per toilet is substantial and compounds across the installation lifetime.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe cistern is available in two connection configurations:\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003e\u003cstrong\u003eBottom-feed cistern (A341681000)\u003c\/strong\u003e: The water supply connection enters the cistern from the base, below the water line. This configuration completely hides the supply pipe connection within the cistern body, producing a cleaner external appearance with no visible pipework above the cistern base.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003e\u003cstrong\u003eSide-feed cistern (A341680000)\u003c\/strong\u003e: The water supply connection enters from the side of the cistern. This is the traditional cistern connection arrangement, compatible with the majority of standard plumbing supply configurations.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe choice between bottom-feed and side-feed depends on the water supply pipe routing in the specific installation — confirm the position of the supply pipe stub-out with your plumber before selecting the cistern configuration.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe cistern includes a \u003cstrong\u003efixing system, feeding mechanism, and discharge mechanism\u003c\/strong\u003e — all components required for complete cistern assembly and operation are included; no supplementary components are required for a fully functional installation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eThe Supralit® Antibacterial Seat: Material Science in the Most Critical Contact Surface\u003c\/h2\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe seat and lid of the Roca Ona Rimless are manufactured in \u003cstrong\u003eSupralit® resin\u003c\/strong\u003e — a material specification that warrants specific attention, because the toilet seat is the primary human contact surface in the bathroom environment and its material properties directly affect both hygiene and durability.\u003c\/p\u003e\n\u003ch3\u003eAntibacterial Properties\u003c\/h3\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eSupralit® resin is formulated with antibacterial properties — an active characteristic of the material itself, not a surface coating applied after manufacture. This distinction matters because surface coatings are subject to degradation: they are removed by cleaning products, abraded by regular use, and compromised by scratches or impacts. A material whose antibacterial properties are intrinsic to its composition retains these properties regardless of surface wear or the cleaning products applied to it.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eIn the context of a toilet seat — a surface exposed to daily use, regular cleaning with products that may include bleach or other strong disinfectants, and the cumulative surface wear of years of operation — intrinsic antibacterial properties represent a genuinely durable hygiene characteristic rather than a property that degrades from day one of installation.\u003c\/p\u003e\n\u003ch3\u003eDurability and Ease of Cleaning\u003c\/h3\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eSupralit® resin is a dense, non-porous material. Non-porosity is a significant characteristic for bathroom surfaces: porous materials absorb liquids and organic material into the surface structure itself, making thorough cleaning difficult and creating conditions where contamination can survive standard cleaning procedures. A non-porous resin surface can be cleaned to its full depth with every cleaning cycle — there is no sub-surface reservoir where contamination can persist.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe density of the Supralit® material also provides resistance to the surface scratching and cracking that affect lower-quality plastic toilet seats over time. Scratches and surface cracks in a toilet seat are not only aesthetic problems — they create sites where bacterial colonisation and organic material accumulation can occur that are resistant to cleaning, creating the same type of hygiene liability in miniature that the traditional toilet rim creates in the bowl.\u003c\/p\u003e\n\u003ch3\u003eStainless Steel Hinges and Easy-Clean Design\u003c\/h3\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe seat is mounted on \u003cstrong\u003estainless steel hinges\u003c\/strong\u003e — a materials choice that prevents the corrosion and discolouration that affects zinc-alloy or chrome-plated hinges in the bathroom environment over time. Stainless steel hinges maintain their appearance and structural integrity across years of daily use and regular cleaning with bathroom cleaning products.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe easy-clean hinge design supports removal of the seat from the toilet for thorough cleaning of the hinge mounting area on the toilet bowl — a zone that is notoriously difficult to clean in traditional fixed-hinge seat designs, and one that accumulates contamination in the gap between the seat mounting base and the ceramic bowl surface. Removable seat systems that allow complete cleaning access to the hinge zone represent a genuine hygiene improvement over fixed hinge designs.\u003c\/p\u003e\n\u003ch3\u003eMatching Finish\u003c\/h3\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe seat is finished to match the white glaze of the Ona Rimless bowl — both the colour and the surface quality are coordinated with the bowl finish. The seat dimensions (36.3 cm wide × 41.7 cm deep × 4.5 cm high) and the standard 20 cm fixing hole distance are specified to ensure that the seat is precisely fitted to the Ona bowl geometry.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eTwo seat options are available:\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003e\u003cstrong\u003eStandard seat with lid (A801E20001)\u003c\/strong\u003e: A conventional lid and seat with the full Supralit® antibacterial specification and stainless steel hinges.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003e\u003cstrong\u003eSoft-close seat with lid (A801E22001)\u003c\/strong\u003e: The same seat with the addition of a soft-close mechanism that prevents the lid and seat from slamming when lowered — a feature that eliminates impact noise and wear at the hinge points, extending the mechanical service life of the seat and eliminating the characteristic noise of a seat dropped in haste.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eThe Ona Collection and Roca as a Brand\u003c\/h2\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe Ona Rimless toilet belongs to the \u003cstrong\u003eRoca Ona collection\u003c\/strong\u003e — a bathroom range designed around rounded forms and a clean modern aesthetic that prioritises the appearance of simplicity achieved through resolved design rather than decorative complexity. The Ona bowl's \u003cstrong\u003erounded design\u003c\/strong\u003e softens the visual geometry of the toilet within the overall bathroom composition, complementing both minimalist bathroom schemes and more traditional spatial treatments.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003e\u003cstrong\u003eRoca\u003c\/strong\u003e is one of the most significant bathroom product manufacturers in the world, with commercial operations in more than 130 countries and a heritage in bathroom innovation extending back to its founding in Spain in 1917. The brand's scale — which supports substantial investment in manufacturing quality, material research, and design development — is directly reflected in the specifications of products like the Ona Rimless: the Supralit® antibacterial seat material, the internal water distributor engineering, and the dual outlet evacuation compatibility are product-level investments that only a manufacturer with genuine technical resources and a commitment to differentiated performance can sustain across a full product line.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eRoca's presence in professional specification — in architectural projects, hotel developments, and healthcare environments where product performance is assessed at a level of rigour that consumer retail does not routinely apply — provides an independent validation of the brand's quality standards that is meaningful for the residential buyer evaluating a long-term bathroom investment.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eDimensions and Installation Planning\u003c\/h2\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe Ona Rimless bowl dimensions — \u003cstrong\u003e37 cm wide × 60 cm deep × 78.5 cm high\u003c\/strong\u003e — represent a relatively compact floor footprint for a floor-standing toilet, making the toilet suitable for bathrooms where space efficiency is a consideration without the structural complexity of a concealed-cistern suspended installation.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe 37 cm width is a compact specification: standard toilets range from approximately 35 cm to 40 cm in width, and the 37 cm width of the Ona allows comfortable clearance from adjacent bathroom elements such as vanity units, bath edges, or partition walls without requiring the minimum 40 cm clearance of wider models.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe 60 cm depth (projection from the wall) is within the standard range for low-tank toilets, which typically extend 60–70 cm from the wall face. The cistern is positioned above the bowl rather than behind it in a separate wall-mounted position, so the combined depth of the installation (bowl projection plus cistern depth above) is the principal space consideration for installation planning — confirm the available depth in the intended installation position before committing to the product specification.\u003c\/p\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe 78.5 cm height is a standard toilet height — the rim height (seat-to-floor measurement) will be approximately 40–42 cm in the installed configuration, within the standard range for toilet seat height in European residential and commercial installation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eInstallation Overview\u003c\/h2\u003e\n\u003cp class=\"first:mt-1.5!\"\u003eThe Roca Ona Rimless installs as a complete package with the bowl, cistern, and seat specified and purchased together. The installation sequence is:\u003c\/p\u003e\n\u003col class=\"list-decimal\"\u003e\n\u003cli class=\"ml-4\"\u003e\n\u003cp class=\"first:mt-1.5!\"\u003e\u003cstrong\u003eDrainage connection\u003c\/strong\u003e: The evacuation elbow (included) connects the dual outlet of the bowl to the existing drainage pipe. The outlet orientation — horizontal or vertical — is determined by the drainage arrangement at the installation point and configured using the included elbow.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"ml-4\"\u003e\n\u003cp class=\"first:mt-1.5!\"\u003e\u003cstrong\u003eBowl positioning and fixing\u003c\/strong\u003e: The bowl is positioned against the wall at the measured installation point and fixed using the included fixing kit. The stud positions on the floor and wall are marked, drilled, and anchored before the bowl is secured.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"ml-4\"\u003e\n\u003cp class=\"first:mt-1.5!\"\u003e\u003cstrong\u003eCistern installation\u003c\/strong\u003e: The Ona cistern is positioned on or above the bowl (depending on the specific installation configuration) and connected to the water supply using the bottom-feed or side-feed inlet fitting. The cistern mechanisms (feed, discharge, dual flush button) are included with the cistern.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"ml-4\"\u003e\n\u003cp class=\"first:mt-1.5!\"\u003e\u003cstrong\u003eSeat fitting\u003c\/strong\u003e: The Supralit® seat is fitted to the bowl using the hinge mounting system and the 20 cm fixing hole positions on the bowl.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cblockquote\u003e\n\u003cp class=\"first:mt-1.5!\"\u003e⚠️ \u003cem\u003eAll drainage and water supply connections must be made by a qualified plumber in compliance with local plumbing regulations. The product should be installed on a structurally sound floor and wall surface capable of supporting the combined weight of the toilet, cistern, and user. Note: actual hinges may differ from those shown in product images — refer to the exploded view diagram for the current model configuration.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003ch2\u003eSummary: Is the Roca Ona Rimless the Right Toilet for Your Bathroom?\u003c\/h2\u003e\n\u003cp class=\"first:mt-1.5!\"\u003e✅ \u003cstrong\u003eRimless technology\u003c\/strong\u003e — no interior rim channel; eliminates the inaccessible cavity that makes traditional toilet bowls structurally resistant to thorough cleaning; the entire bowl surface is directly accessible to standard cleaning tools\u003cbr\u003e✅ \u003cstrong\u003eInternal water distributor\u003c\/strong\u003e — engineered water distribution system that delivers powerful, uniform, splash-free flush coverage to the complete bowl surface without a rim channel\u003cbr\u003e✅ \u003cstrong\u003eDrag-type discharge\u003c\/strong\u003e — hydraulic flush action that achieves effective bowl evacuation with reduced water volume; compatible with the 4.5\/3 litre dual flush cistern specification\u003cbr\u003e✅ \u003cstrong\u003eDual outlet (horizontal + vertical)\u003c\/strong\u003e — compatible with both wall-exit and floor-exit drainage configurations; eliminates drainage incompatibility as a constraint on toilet selection in renovation projects; evacuation elbow included\u003cbr\u003e✅ \u003cstrong\u003eFloor-standing, wall-hung installation\u003c\/strong\u003e — no concealed carrier frame required; standard cistern; fully accessible plumbing connections; suitable for all standard bathroom constructions without specialist structural preparation\u003cbr\u003e✅ \u003cstrong\u003eCompact dimensions\u003c\/strong\u003e — 37 × 60 × 78.5 cm; space-efficient floor footprint for a low-tank toilet\u003cbr\u003e✅ \u003cstrong\u003eOptional Roca Ona cistern\u003c\/strong\u003e — dual flush 4.5\/3 litres; available in bottom-feed and side-feed configurations; includes all internal mechanisms\u003cbr\u003e✅ \u003cstrong\u003eSupralit® antibacterial seat\u003c\/strong\u003e — intrinsic antibacterial properties throughout the material composition, not a degradable surface coating; non-porous; resistant to surface wear and cracking\u003cbr\u003e✅ \u003cstrong\u003eStainless steel hinges\u003c\/strong\u003e — corrosion-resistant; easy-clean removable design for complete access to hinge mounting zone\u003cbr\u003e✅ \u003cstrong\u003eTwo seat options\u003c\/strong\u003e — standard lid and seat or soft-close lid and seat\u003cbr\u003e✅ \u003cstrong\u003eRounded Ona design\u003c\/strong\u003e — contemporary form in white finish that integrates with a wide range of bathroom aesthetics\u003cbr\u003e✅ \u003cstrong\u003eRoca manufacture\u003c\/strong\u003e — brand with 100+ years of bathroom product engineering, present in 130+ countries, specified in professional and architectural contexts internationally\u003cbr\u003e✅ \u003cstrong\u003eEAN: 8433290195781 | SKU bowl: A342688000\u003c\/strong\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp class=\"first:mt-1.5!\"\u003e💡 \u003cem\u003eSpecification note: When planning the installation of the Ona Rimless, confirm the drainage pipe orientation (horizontal or vertical) before purchase to ensure correct configuration of the evacuation elbow, and confirm the water supply pipe position (bottom or side entry) to select the appropriate cistern configuration (A341681000 for bottom feed, A341680000 for side feed). Both configurations deliver identical performance — the choice is determined entirely by the existing plumbing at the installation point.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Roca","offers":[{"title":"With square cistern bottom feed \/ Seat with lid \/ blanco-mate","offer_id":57269967520009,"sku":"A342688000+A341681000+A801E20001","price":547.4,"currency_code":"EUR","in_stock":true},{"title":"With square cistern bottom feed \/ Asiento con tapa con amortiguador \/ blanco-mate","offer_id":57269967552777,"sku":"A342688000+A341681000+A801E22001","price":586.16,"currency_code":"EUR","in_stock":true},{"title":"Con cisterna cuadrada alimentación lateral \/ Seat with lid \/ blanco-mate","offer_id":57269967585545,"sku":"A342688000+A341680000+A801E20001","price":547.4,"currency_code":"EUR","in_stock":true},{"title":"Con cisterna cuadrada alimentación lateral \/ Asiento con tapa con amortiguador \/ Blanco Brillo","offer_id":57269967618313,"sku":"A342688000+A341680000+A801E22001","price":586.16,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/5753\/8313\/files\/004_14923_00_ONA_A342688000_t_Product_Pictures_TF_Mob_prod_xxl_v2_1.jpg?v=1787323929","url":"https:\/\/merkimarket.com\/en-fr\/products\/roca-ona-rimless-low-tank-toilet-dual-outlet-gloss-white","provider":"MerkiMarket","version":"1.0","type":"link"}