Geberit Sigma8 Duofix In-wall Cistern

Geberit Sigma8 Duofix · the in-wall cistern most architects already specify.

Swiss design, German manufacturing, and a one-piece HDPE body that's been the industry default for a reason. The Duofix frame supports wall-hung pans on either S- or P-trap and works across Geberit's 30+ flush button range. Fully insulated against condensation, tool-free maintenance, and built for decades of quiet operation.

Design notes

• One-piece blow-moulded HDPE — leak-proof construction
• Insulated against condensation
• Compatible with all Sigma button styles

Specifications

• Brand: Geberit
• Range: Sigma8 Duofix
• Body: HDPE one-piece blow-moulded
• Trap compatibility: S-trap or P-trap
• Pan compatibility: All Mercio Wall-Hung Pans
• Button compatibility: 30+ Sigma mechanical, pneumatic, or electronic

Installation & compatibility

Duofix frame for wall-hung pans. Tool-free installation and maintenance.

In the box

• 1 × Sigma8 Duofix in-wall cistern with frame

Warranty