Sigma Concealed Tank For 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 flor-mount toilet bowl to complete installation. See our Clean Design  (, 12 MB) brochure for a list of compatible bowls.
• Pair with stylish Sigma series flush actuators or compatible remote flush buttons (order separately)

Water Conservation & Rebates

• See our Clean Design  (, 12 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