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

Systems for Floor-mounted, Back-outlet Toilets, 2x6 Installation

Model No.Flush VolumeList Price (USD)
109.304.00.51.6/0.8 GPF$525.00
109.307.00.51.28/0.8 GPF$525.00

Systems for Floor-mounted, Back-outlet Toilets, 2x4 Installation

Model No.Flush VolumeList Price (USD)
109.797.00.11.6/0.8 GPF$684.00

Geberit is committed to sustainability

EPA WaterSense Partner Logo
Alliance for Water Efficiency Logo
US Green Building Council Logo