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Sigma 12cm Concealed Cistern
Currently Unavailable
This item is currently out of stock. Please contact us for the latest lead time.
Our team can confirm expected availability.
Regular price
£191.95
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INVERSO RIGATO Flush Plate for Geberit Sigma 8 & 12
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ANELLO Flush Plate for Geberit Sigma 8 & 12
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VENTI20 Flush Plate for Geberit Sigma 8 & 12
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We help design your perfect bathroom using 2D and 3D visuals, so you're confident before you buy. Our team is here at every step — from selecting the right fittings to aftercare support once your bathroom is complete.
Find out moreWarranty
Every product comes with the full manufacturer's warranty. We also offer the Soaque Warranty — a service guarantee that goes above and beyond the legal minimum, ensuring you receive aftercare you can trust.
Delivery
We work with trusted couriers and consolidate orders where possible. Some products are delivered kerbside on pallets — onward handling into the property is the customer's responsibility. Items may occasionally arrive separately.
Returns
You have 14 days from receipt to request a return for a full refund. Due to the specialist nature of our products, returns can be costly — we encourage you to speak with our team before ordering. Return delivery costs are the customer's responsibility.
Currently Unavailable
This item is currently out of stock. Please contact us for the latest lead time.
Our team can confirm expected availability.
Regular price
£191.95
Essential products
INVERSO RIGATO Flush Plate for Geberit Sigma 8 & 12
From £1,328.95
ANELLO Flush Plate for Geberit Sigma 8 & 12
From £694.95
Flush Plate for Geberit Sigma 8 & 12
From £631.95
VENTI20 Flush Plate for Geberit Sigma 8 & 12
From £755.95
We help design your perfect bathroom using 2D and 3D visuals, so you're confident before you buy. Our team is here at every step — from selecting the right fittings to aftercare support once your bathroom is complete.
Find out moreWarranty
Every product comes with the full manufacturer's warranty. We also offer the Soaque Warranty — a service guarantee that goes above and beyond the legal minimum, ensuring you receive aftercare you can trust.
Delivery
We work with trusted couriers and consolidate orders where possible. Some products are delivered kerbside on pallets — onward handling into the property is the customer's responsibility. Items may occasionally arrive separately.
Returns
You have 14 days from receipt to request a return for a full refund. Due to the specialist nature of our products, returns can be costly — we encourage you to speak with our team before ordering. Return delivery costs are the customer's responsibility.
About this product
Sigma 12cm Concealed Cistern
From Geberit's Sigma range, this 12cm concealed cistern is a classic of modern bathroom installation, with over 70 million Geberit concealed cisterns installed worldwide. Designed for BTW floor-standing WC pans in part- or full-height pre-wall constructions, it offers front actuation and compatibility with over 120 Geberit Sigma flush plate finishes.
Key Features
- Construction height 1080mm; depth 120mm — suited to BTW floor-standing WC pans
- Fully insulated against condensation; flush bend factory-fitted
- Factory flush setting 5.8L / 3L; adjustable large flush 4 / 4.5 / 6 / 7.5L; small flush 2–4L
- Cistern can be installed at reduced height of 980mm by trimming the flush pipe
- Tool-free installation and maintenance via protection box
- Every cistern is leak-tested before delivery; 50-year spare parts guarantee
- Compatible with over 120 Geberit Sigma flush plate finishes — Sigma01, Sigma20, Sigma40, Sigma50, and Sigma70 ranges
- Flush plate sold separately, to be paired with Geberit Sigma or Gessi flush plates
Why Choose Geberit
Geberit's concealed cisterns have been installed in over 70 million bathrooms worldwide, and each one is leak-tested before delivery. The Sigma range reflects a commitment to reliability and considered engineering — designed to work quietly and efficiently within the fabric of a well-planned bathroom, with spare parts availability guaranteed for 50 years.
Care & Installation
Wipe with a soft cloth; avoid abrasive cleaners. Follow the enclosed installation instructions for best results.
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