Duravit
Sigma 12cm Concealed Cistern & Sigma40 Square Flush Plate
In Stock
Available now and ready for dispatch.
Delivery typically 2–5 working days.
Colour
Matt Black
Regular price
£513.90
Premium service
Product & Design Support
Ask us about this product
Our design service
Clear Direction
£100
A clear, structured starting point for your bathroom project — with layout guidance, product direction and confidence to move forward.
Refundable on £500+ product spend
Complete Vision
£250
See your bathroom in photorealistic detail before installation begins — for complete visual clarity and a more refined end result.
Refundable on £1,000+ product spend
Find out more about the design service
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.
In Stock
Available now and ready for dispatch.
Delivery typically 2–5 working days.
Colour
Matt Black
Regular price
£513.90
Premium service
Product & Design Support
Ask us about this product
Our design service
Clear Direction
£100
A clear, structured starting point for your bathroom project — with layout guidance, product direction and confidence to move forward.
Refundable on £500+ product spend
Complete Vision
£250
See your bathroom in photorealistic detail before installation begins — for complete visual clarity and a more refined end result.
Refundable on £1,000+ product spend
Find out more about the design service
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 & Sigma40 Square Flush Plate
From Geberit's Sigma range, this 12cm concealed cistern and Sigma40 square flush plate bundle provides a premium flushing solution for back-to-wall and floor-standing WC installations. The square-format Sigma40, available in a range of stainless steel finishes, brings clean geometry and designer appeal to a dependable concealed system.
Key Features
- Sigma 12cm concealed cistern with construction height of 1080mm — suited for BTW floor-standing WC pans
- Fully insulated against condensation; flush bend factory-fitted
- Factory flush setting 5.8L / 3L; large flush adjustable to 4 / 4.5 / 6 / 7.5L; small flush 2–4L
- Cistern can be mounted at reduced height of 980mm by trimming the flush pipe
- Every cistern is leak-tested before delivery; 50-year spare parts guarantee
- Compatible with over 120 Geberit Sigma flush plate finishes
- Sigma40 square flush plate — ultra-slim 4mm stainless steel with fingerprint-resistant easy-to-clean coating, water-saving dual flush, and sound-absorbing actuator rods
- Flush plate includes mounting frame, distance bolts, and actuator rods
Why Choose Geberit
With over 150 years of engineering expertise and more than 70 million concealed cisterns installed worldwide, Geberit is the trusted name in concealed bathroom systems. Every cistern is leak-tested before leaving the factory, and products are designed to work as an integrated system — quietly, reliably, and 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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