Geberit 109.304.00.5 In-Wall Tank Replaces 109.304.00.1 Dual Flush

Geberit concealed tanks offers many of the benefits of our in-wall toilet system. Its 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 beatufully 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
Easy cleaning clean the entire floor with a damp mop, no bending or kneeling
Improved accessibility requires less space than a standard toilet, enhancing safety and comfort; adjustable bowl height meets personal preference or ADA guidelines
Water savings built-in dual-flush, 1.6 / 0.8 GPF saves thousands of gallons every year
Superior function engineered Geberit fill and flush valves eliminate problematic chains and flappers that corrode and fail

  • For installation of UP320 concealed flush tanks for floorstanding BTW washdown toilet
  • For installation in wood or steel stud walls that provide support equal to 2"x 6" (5.5") depth
  • For dual flush
  • For room wall or pre-wall construction covered with panels (gypsum or wood)
  • For installation in front of a solid or drywall
  • For installation in room-height pre-wall or partition wall
  • For toilet with dual-flush low-consumption flushing volume of 1.6 / 0.8 GPF (6 / 3 LPF)
  • Water supply connection at center back or at the top
  • Concealed tank for tool-free mounting and repair work
  • Concealed tank fully insulated against condensation
  • Fill valve flow rate at 7 psi (0.5 bar): 1.1 gpm (0.07 l/s)
  • Fill valve flow rate at 43 psi (3 bar): 3.0 gpm (0.19 l/s)
  • Flush volume: 1.6/0.8 GPF (6/3 LPF)
  • Fill valve operating pressure range: 1 - 145 psi (0.1 - 10 bar)
  • Fill valve max. fluid temp: 77 F (25 C)
  • Impuls380 fill valve
  • Fastening material