Category Overview
Concealed toilet cisterns are the backbone of modern wall-hung toilet installations. Also known as in-wall toilet tanks or hidden toilet cisterns, these systems hide the flush tank and all plumbing inside the wall, leaving only a flush plate and a floating toilet visible. The result is a clean, space-saving bathroom that is far easier to clean than traditional floor-mounted setups. As a factory-direct manufacturer, YINGJIE supplies concealed cisterns and wall-hung toilet frames for residential bathrooms, hotel projects, commercial washrooms and renovation contractors across North America, Europe, Australia and the Middle East.
Every YINGJIE concealed cistern is built on a heavy-duty carbon steel frame with an anti-corrosion coating, paired with a white, high-strength plastic tank. Depending on the model, the frame finish is available in royal blue or matte black, and all units support dual-flush operation for water savings. Whether you are outfitting a chain of hotel bathrooms, planning a residential renovation or supplying bathroom distributors, a dependable concealed cistern system reduces installation time, minimizes after-sales issues and elevates the perceived quality of the finished bathroom. This is why importers, contractors and distributors choose YINGJIE as their supply partner for wall-hung toilet projects.

Why Choose a Concealed Cistern System
Wall-hung toilets with concealed cisterns are increasingly specified by architects, interior designers and hotel operators for three reasons. First, the floating toilet opens up floor space, making small bathrooms feel larger and simplifying floor cleaning. Second, the concealed tank is insulated behind the wall, reducing flush noise compared to exposed cisterns. Third, the wall-hung installation brings the toilet to a comfortable ergonomic height, typically 400 mm from the finished floor, which suits hotel and accessible bathroom design.
From a maintenance perspective, concealed systems are also practical: the flush mechanism is accessible through the flush plate opening, so service does not require breaking into the tiled wall. Combined with dual-flush valves that use water efficiently, these systems lower operating costs in commercial buildings where toilets are used heavily throughout the day.

Material & Craftsmanship
Material quality determines how long a concealed cistern lasts inside a wall cavity, where maintenance is difficult after tiling. Our frames are manufactured from heavy-gauge carbon steel and finished with a baked anti-corrosion coating that resists rust and humidity. The M6601 series adds brass/copper inlet and control valves for corrosion resistance and stable water flow over years of daily use.
The cistern body is blow-moulded from high-strength plastic - high-density polyethylene (HDPE) on the CE-certified M6601 model - with rib reinforcement on selected models for extra rigidity. All tanks are pressure-tested for water-tightness before shipment, and every unit passes a 100% pre-shipment inspection covering the flush mechanism and seals.

Product Range & Specifications
Our concealed cistern range covers six configurations to suit different project conditions:

Standard wall-hung frames - the CE-certified In-Wall Toilet Tank with Steel Frame (royal blue, HDPE tank, adjustable legs 0-220 mm) and the matte black Wall-Hung Toilet Cistern with Steel Frame for compact layouts.
Frame systems with drain kit - the Wall-Hung Toilet Frame with Concealed Cistern ships complete with drain and flush pipes, and the Hidden Toilet Cistern with Wall-Hung Frame is a full concealed system for modern bathrooms.
Specialized configurations - the Heavy-Duty Toilet Frame with Concealed Cistern (19 kg reinforced frame) for commercial and high-traffic facilities, and the Freestanding Toilet Frame with Concealed Cistern with L-shaped floor legs for renovations where wall fixing is not possible.

Common technical specifications across the range: suitable hole spacing of 180 mm or 230 mm for the wall-hung toilet, 110 mm drain pipe diameter, G1/2 water inlet, adjustable support legs, and dual-flush operation. All frames ship with fixing hardware, and the wall-hung models include leveling feet so the installer can compensate for uneven floors. The 0-220 mm leg adjustment on the M6601 series handles a wide range of finished floor heights, while the 180/230 mm dual hole spacing covers the two most common wall-hung toilet fixing standards. Full dimensions, packing sizes and weights are listed on each product page. Custom frame colors, flush plate finishes, logo printing and packaging are available under OEM/ODM programs.

Installation & Compatibility
Concealed cistern installation follows a standard sequence: fix the frame to the wall and floor, connect the water inlet and drain, adjust the legs to level the frame, then tile or plaster over the system. The freestanding model simply stands on its L-shaped floor legs, which is ideal for stud walls and retrofit projects.
All YINGJIE cisterns accept standard concealed cistern flush plates, including our own toilet flush plate collection as well as Geberit Sigma and Delta, R&T and WDI systems. Pair the cistern with any toilet from our wall-hung toilet range for a complete, coordinated installation.
All trademarks are the property of their respective owners. YINGJIE concealed cisterns are independent aftermarket products.

Quality Assurance & Certification
Quality is managed from raw material to finished product: steel frames are coated for corrosion resistance, tanks are leak-tested, and each flush mechanism is cycled before packing. The M6601 series carries CE certification, and our factory follows a documented quality control process covering incoming inspection, in-process checks and final pre-shipment inspection. Documentation such as test reports and certificates can be provided with bulk orders.

Sourcing from YINGJIE
YINGJIE is a certified bathroom sanitary ware manufacturer with manufacturing experience since 2011 and a registered entity since 2019. All concealed cisterns are produced in our own factory, which gives buyers direct factory pricing, consistent quality control and flexible customization. Standard order terms: MOQ 50 pcs per model and 25-35 days lead time. CE certification is available on the flagship M6601 series, and samples can be arranged for pre-order evaluation.
For project quotations, send us your quantities, target market and any specific certification requirements - our export team responds within 24 hours with a detailed quote and lead time.

Frequently Asked Questions
1. What is the minimum order quantity (MOQ)?Our MOQ is 50 pcs per model. Mixed-model orders are welcome; sample orders are available for evaluation before bulk purchasing.
2. What is the typical lead time?Standard production and delivery takes 25-35 days, depending on order volume and customization requirements.
3. Which flush plates are compatible with these cisterns?All YINGJIE concealed cisterns are compatible with standard concealed cistern flush plates, including YINGJIE, Geberit Sigma and Delta, R&T and WDI systems.
4. Are the frames suitable for commercial washrooms?Yes. The Heavy-Duty Toilet Frame with Concealed Cistern features a reinforced 19 kg frame engineered for high-traffic facilities, while the standard models suit residential and hotel applications.
5. Can you customize frame colors or packaging?Yes. We offer OEM/ODM services including custom frame finishes, flush plate colors, logo printing and packaging for volume orders.
6. Is CE certification available?Yes. The flagship In-Wall Toilet Tank with Steel Frame (M6601 series) is CE certified, and other certifications can be discussed based on your target market.

Request a Quote
Looking for a reliable concealed cistern supplier? Contact our export team today with your project details for a factory-direct quotation, samples and full technical documentation.