Geberit 111.383.00.3 is a Duofix installation frame designed for wall-hung toilets. It stands 112 cm high and features the Sigma 12 cm (UP320) concealed cistern. This system is a complete solution for modern, space-saving bathroom installations. 
Key Features
Heavy-Duty Support: The self-supporting, powder-coated steel frame is load-tested to support up to 400 kg (approx. 880 lbs).
Sigma Concealed Cistern: Includes a fully insulated 12 cm cistern to prevent condensation. It is designed for front actuation and is compatible with the wide range of Geberit Sigma flush plates (sold separately).
Water Efficiency: Features a dual-flush system with a factory setting of 5.8 and 3 liters, helping to reduce water consumption.
Versatile Installation: Suitable for drywall or pre-wall installations in part- or room-height walls. The feet are adjustable from 0–20 cm and feature non-slip leg supports for easier leveling.
Tool-Free Maintenance: The cistern is designed for tool-free installation and maintenance through the service opening behind the flush plate.
Future-Proofing: Equipped with a conduit pipe for the water connection of Geberit AquaClean shower toilets and a fastening option for electrical connections. 
Technical Specifications
Dimensions: 1120mm (H) x 500mm (W) x 120mm (D).
Flow Pressure Range: 0.1 to 10 bar.