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Sigma 8cm Slimline Concealed Cistern & Sigma40 Square Flush Plate
Currently Unavailable
This item is currently out of stock. Please contact us for the latest lead time.
Our team can confirm expected availability.
Sigma40 Square Dual Flush Plate (Finish)
Regular price
£566.90
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.
Currently Unavailable
This item is currently out of stock. Please contact us for the latest lead time.
Our team can confirm expected availability.
Sigma40 Square Dual Flush Plate (Finish)
Regular price
£566.90
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 8cm Slimline Concealed Cistern & Sigma40 Square Flush Plate
From Geberit's Sigma range, this slimline 8cm concealed cistern and Sigma40 square flush plate bundle combines space-saving depth with a refined, design-led finish. The square-format ultra-slim Sigma40 is available in a range of stainless steel finishes, and works in perfect harmony with the slimline cistern for a complete, considered BTW installation.
Key Features
- Slimline 8cm depth — ideal for space-restricted pre-wall and BTW installations
- Construction height 1190mm; front actuation
- Fully insulated against condensation; factory flush setting 5.8L / 3L
- Adjustable flush volumes — large flush 4.5 / 6 / 7.5L; small flush 2–4L
- Tool-free installation and maintenance via protection box
- Every cistern is leak-tested before delivery; 50-year spare parts guarantee
- Compatible with over 100 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; 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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