Description
In-Wall Toilet Tank with Steel Frame – CE Certified
This CE-certified in-wall toilet tank is a complete concealed cistern system for wall-hung toilets, built on a heavy-duty royal blue steel frame with a white HDPE water tank. It hides all plumbing inside the wall for a clean, space-saving bathroom finish – ideal for residential bathrooms, hotel projects and commercial washrooms.
Design & Aesthetics
The concealed design removes the bulky external cistern and leaves only a flush plate visible on the wall. The royal blue anti-corrosion steel frame delivers a precision industrial look while supporting the wall-hung toilet at a recommended 400 mm seat height. The white HDPE tank integrates seamlessly behind tiled or plasterboard walls, keeping the bathroom uncluttered and easy to clean.
Material & Durability
The frame is manufactured from heavy-gauge carbon steel with a baked anti-corrosion coating, offering strong load-bearing capacity and reliable resistance to rust and humidity inside wall cavities. The cistern is blow-moulded from high-density polyethylene (HDPE) for leak-proof, long-term performance. Brass inlet and control valves resist corrosion and ensure stable water flow over years of daily use.
Technical Specifications
| Model | M6601A / M6601C (standard); M6601B (economy) and M6601D (premium) available |
| Type | In-wall / concealed toilet cistern with steel frame |
| Frame Finish | Royal blue anti-corrosion coated steel |
| Cistern Material | White HDPE (blow-moulded) |
| Frame Dimensions | 1140 x 500 mm (H x W) |
| Adjustable Legs | 0 – 220 mm |
| Suitable Hole Spacing | 180 mm / 230 mm |
| Drain Pipe Diameter | 110 mm |
| Water Inlet | G1/2 |
| Recommended Seat Height | 400 mm |
| Flush | Dual flush |
| Packing Size | 1190 x 165 x 540 mm |
| Gross / Net Weight | 14.4 kg / 12.4 kg |
| Certification | CE |
| MOQ | 50 pcs per model |
| Lead Time | 25 – 35 days |
Dual Flush Water Efficiency
The concealed cistern uses a dual flush mechanism – a reduced flush for liquid waste and a full flush for solid waste – which cuts water use compared with a single-flush system. Reduced flush volumes of around 3 litres and a full flush of around 6 litres are typical for concealed cisterns, and the flush volume can be adjusted on site to match regional water-efficiency expectations. Lower water use per flush also reduces the load on the drain system in high-traffic buildings, which is why dual flush concealed systems are the standard choice for modern hotel and apartment projects.
Installation & Compatibility
Installation is straightforward: fix the frame to the wall and floor, connect the G1/2 water inlet and 110 mm drain, adjust the legs to level, then tile or plaster over the frame. The cistern is compatible with YINGJIE flush plates and most standard concealed cistern flush plate systems, including Geberit Sigma & Delta, R&T and WDI. Browse our toilet flush plates collection to match the perfect finish, or pair it with a wall-hung toilet from our range.
All trademarks are the property of their respective owners. YINGJIE concealed cisterns are independent aftermarket products.
Installation Steps
The CE-certified M6601 system is our flagship concealed cistern for specification-led projects. A typical installation follows these steps:
- Position and level the frame – fix the frame to the wall and floor, or use the adjustable legs (0-220 mm) to level – using the adjustable legs and built-in level points.
- Connect the water inlet and drain pipes to the frame’s outlets before closing the wall.
- Fit the flush mechanism and verify water-tightness with a test flush.
- Tile or plaster over the frame, leaving the access opening for the flush plate unobstructed.
- Mount the flush plate, hang the wall-hung toilet and run a full flush cycle to confirm performance.
Customization Options
Full OEM/ODM support is available: custom frame colors, flush plate finishes, logo printing and packaging for volume orders. Share your project drawings and our engineers will confirm feasibility within 48 hours.
Quality Assurance
CE certified. Every unit passes a 100% pre-shipment inspection covering water-tightness and flush mechanism testing, ensuring consistent quality from sample to bulk order.
Frequently Asked Questions
Q: What certifications does the M6601 carry?
A: CE certification covers the European market. For other markets, request the applicable certificate with your quotation – CUPC for North America or WaterMark for Australia – and we will confirm availability for the specific model.
Q: Which flush plates are compatible with this cistern?
A: The cistern works with YINGJIE flush plates and most standard concealed cistern systems, including Geberit Sigma & Delta, R&T and WDI plates. All trademarks belong to their respective owners; our cisterns are independent aftermarket products.
Q: What is the recommended seat height?
A: Set the frame so the finished toilet seat sits at about 400 mm – the recommended comfort height for most users. The adjustable legs make this straightforward to achieve on site.
Q: Can the frame height be adjusted on site?
A: Yes — the adjustable legs allow fine height adjustment (0–220 mm), so you can set the finished seat height to about 400 mm, the recommended comfort height for most users.
Q: What flush volumes does the cistern offer?
A: The dual-flush mechanism provides a reduced flush and a full flush to balance water efficiency with performance. Exact volumes depend on your target market’s regulations and are available on request.
Q: Does the cistern work with third-party flush plates?
A: Yes — it works with most standard concealed cistern systems, including Geberit Sigma & Delta, R&T and WDI plates. All trademarks belong to their respective owners; our cisterns are independent aftermarket products.
Ready to source? Request a sample or quotation today – our team replies within 24 hours.
