Sigma Concealed TankFor Floor-mount, Back-outlet Toilets
Geberit concealed tanks offer many of the benefits of our in-wall toilet system. It’s just the thing to replace a standard toilet when a wall-hung toilet is not possible or practical. All the working parts, including the tank and fill and flush valves, are safely and beautifully concealed inside the wall. Make a bold design statement in any bathroom!
When you pair a Geberit installation system with a compatible floor-mount washdown toilet, you get these benefits:
- Design freedom – choose a toilet bowl from any leading ceramic manufacturer; pair with stylish Sigma series flush actuators or compatible flush buttons
- Improved accessibility – requires less space than a standard toilet, enhancing safety and comfort
- Water savings – built-in dual-flush: choose 1.28 / 0.8 GPF or 1.6 / 0.8 GPF to save thousands of gallons of water every year
- Superior function – engineered Geberit fill and flush valves eliminate problematic chains and flappers that corrode and fail
Installation and Scope of Delivery
- For proper stud construction (wood or steel) water supply connection, drainage and venting requirements see installation instructions (links below)
- Includes Geberit Sigma concealed tank, water supply stop, drainage elbow, fill and flush valves pre-installed; mounting hardware
- Requires compatible floor-mount toilet bowl to complete installation. See our Clean Design (, 5.8 MB) brochure for a list of compatible toilet bowls.
- Pair with stylish Sigma series flush actuators or compatible remote flush buttons (order separately)
Water Conservation & Rebates
- See our Clean Design (, 5.8 MB) brochure or use the EPA WaterSense Product Search to find water saving EPA WaterSense combinations with Geberit
- Live in or specifying a project in California? Check out the California Energy Commission (CEC) Appliance Efficiency Database to locate compliant Geberit products
- Search the EPA WaterSense Rebate Finder to find local agencies offering rebates for installing water saving devices
- Refer to USGBC for LEED water saving points
Systems for Floor-mounted, Back-outlet Toilets, 2x6 Installation
Model No. | Flush Volume | List Price (USD) |
---|---|---|
109.304.00.5 | 1.6/0.8 GPF | $525.00 |
109.307.00.5 | 1.28/0.8 GPF | $525.00 |
Systems for Floor-mounted, Back-outlet Toilets, 2x4 Installation
Model No. | Flush Volume | List Price (USD) |
---|---|---|
109.797.00.1 | 1.6/0.8 GPF | $684.00 |
109.781.00.1 | 1.28/0.8 GPF | $684.00 |
Support Documents
Specification Sheet, 2x6 models (, 200 KB)
Specification Sheet, 2x4 models (, 242 KB)
Installation Instructions, 2x6 models (, 3.0 MB)
Installation Instructions, 2x4 models (, 3.1 MB)
Repair Parts, 2x6 models (, 3.3 MB)
Repair Parts, 2x4 models (, 3.5 MB)
Literature
Clean Design - Compatible Fixtures (, 6.3 MB)
Flush Actuator Brochure (, 4.9 MB)
Geberit is committed to sustainability
Awards
![EPA WaterSense Partner Logo EPA WaterSense Partner Logo](/_assets/local-media/logos/10-years-proud-partner-1-1-1-1.jpg)
![Alliance for Water Efficiency Logo Alliance for Water Efficiency Logo](/_assets/local-media/logos/awe-logo-1-1-1-1.jpg)
![US Green Building Council Logo US Green Building Council Logo](/_assets/local-media/logos/usgbc-logo-1-1-1-1.jpg)