Geberit Sigma8 Concealed Cistern 4.5 / 3L Dual-Flush Standard In-wall Cistern For Wall Faced Pan

Geberit Sigma8 Concealed Cistern 4.5 / 3L Dual-Flush Standard In-wall Cistern For Wall Faced Pan

The Swiss-engineered Geberit Sigma8 concealed cistern combines high-density HDPE construction with a sleek slim design, offering leak-proof performance and water-saving dual flush. Engineered to meet Australian standards, this premium in-wall flush system is ideal for modern bathrooms and offers compatibility with a wide selection of Sigma flush plates.

Key Features

• Flush Volume: 4.5 L full / 3 L half (adjustable)

• Installation Depth: 80 mm slim profile for standard 90 mm walls

• Material: Leak-proof, impact-resistant HDPE one-piece tank

• Compatibility: Supports S‑trap & P‑trap toilet pans

• Button Options: Works with over 30 Sigma mechanical, pneumatic, or electronic buttons

• Load Capacity: Up to 400 kg when paired with Duofix wall‑hung frames

• Operating Pressure: 0.1–1,000 kPa

• Condensation-Insulated tank prevents moisture build-up

Dimensions

• Width: 410 mm

• Depth: 80 mm

• Height: Approx. 625–780 mm (varies by installation)

Available As

• Cistern Only (with concealed frame)

What’s Included

• Geberit Sigma8 Concealed Cistern

• Integrated angle-stop valve and flush bend

• Front-access service protection box and flush plate brackets

• Fixing materials for wall or drywall installation

Warranty & Compliance

• 15‑Year Manufacturer’s Warranty on cistern tank

• 25‑Year Spare Parts Availability

• WELS Star Rating: 4‑Star dual-flush (Average 3.4 L/flush)