Geberit Sigma 8 Concealed In-Wall Cistern - 4 Star

The Geberit Sigma 8 Concealed In-Wall Cistern – 4 Star, model 109.795.00.1, is designed for compatible floor-standing back-to-wall toilet pans. Concealing the cistern behind the wall creates a clean bathroom finish, with front-operated flushing.

This is a concealed cistern product, not a complete toilet suite or a Duofix support-frame system for a wall-hung pan. Select the toilet pan and compatible flush plate separately.

Check Compatibility Before Ordering

Choosing a Flush Plate

Geberit's product selector lists compatible Sigma20 and Sigma50 options for this cistern. Confirm the exact flush plate code and installation requirements before ordering. Do not assume that every Geberit flush plate is interchangeable.

Browse our Geberit cisterns and flush plates to compare options.

Before installation, ask your plumber to confirm the pan connection, wall cavity, water supply and service access against the manufacturer's drawings.

View the Geberit product selector and specification guide (PDF) or consult the official specifications and installation documents for this model .