Geberit Sigma50 black walnut and brushed chrome flush plate
Geberit Sigma50 wood effect dual flush plate detail
🎁

Loyalty Rewards

Earn points and redeem discounts

Sign up and earn 359 points with this purchase!

🎯 Earn 1.0 points per £1 spent
🎁 Redeem points for discounts
⭐ Unlock exclusive rewards
Join Loyalty Program

Already a member? Sign in here

Geberit Sigma50 Dual Flush Plate - Black Walnut & Chrome - 115.788.JX.2

UK Stock
VAT Invoice
Trade Friendly
Genuine Brand
SKU: 115.788.JX.2
£359.00
Add to Wishlist
Dispatch: Next working day
🎁

Loyalty Rewards

Earn points and redeem discounts

Sign up and earn 359 points with this purchase!

🎯 Earn 1.0 points per £1 spent
🎁 Redeem points for discounts
⭐ Unlock exclusive rewards
Join Loyalty Program

Already a member? Sign in here

Description

Geberit Sigma50 Dual Flush Plate - Black Walnut & Chrome - 115.788.JX.2

Geberit Sigma50 Dual Flush Plate in Black Walnut and Chrome

A black walnut dual flush plate from the Geberit Sigma50 range on a glossy chrome base plate, with brushed chrome buttons. Frameless, 15mm deep and squared rather than round.

This is the square-button plate in the range at 246 x 164 x 15mm. Geberit build it as three layers: a glossy chrome base plate, a cover plate in genuine black walnut, and two brushed chrome buttons in polished die-cast zinc with an easy-to-clean coating. It is a mechanical dual flush plate, so it keeps working in a power cut.

Choosing between the square and the round Sigma50

Mechanically these plates are identical, so it comes down to button shape and cover material.

1

Square buttons or round buttons

Both share the same 246 x 164mm footprint. Only the buttons differ.

  • Square buttons suit a graphic, rectilinear scheme
  • Round buttons soften a heavily tiled room
  • Both are dual flush and front actuated
2

Wood or glass cover plate

Black walnut is a natural product so grain varies plate to plate. For a completely uniform surface the Lava glass plate gives you the same footprint with none of the variation.

The three Sigma50 plates we stock

Round 115.884.JX.1 Black walnut cover · round buttons · 246 x 164 x 14mm · view the round plate

Square 115.788.JX.2 Black walnut cover · square buttons · 246 x 164 x 15mm · (this product)

Lava glass 241.788.JK.2 Glass cover in Lava · 246 x 164mm · view the lava glass plate

All three are Geberit Sigma50 dual flush plates for front actuation, so they take the same Sigma concealed cisterns. The choice is the cover material and the button shape.

Black walnut is a natural material. Grain pattern and colour vary between plates, so the one you receive will not match a photograph exactly. If you need two plates to look alike in the same property, order them at the same time so they come from one batch.

Technical Details

General Brand Geberit
Range Sigma50
Article number 115.788.JX.2
Plate shape Square buttons
Guarantee 5 years
Materials & finish Base plate Chrome, glossy
Cover plate Black walnut, natural wood
Buttons Chrome, brushed, easy-to-clean coated
Button material Polished die-cast zinc
Dimensions Width 246mm
Height 164mm
Depth 15mm
Operation Flush type Dual flush
Actuation Front, mechanical
Electrical supply None required
Works in a power cut Yes, fully mechanical
Compatibility Cistern Geberit Sigma concealed cisterns with front actuation
Not compatible with Geberit Omega cisterns or other manufacturers' frames
Geberit Sigma50 dual flush plate in black walnut and chrome 115.788.JX.2

Three layers, three materials

Geberit build this plate as a glossy chrome base, a black walnut cover and brushed chrome buttons. That layering is why the plate has depth to it rather than looking like a single moulded panel, and it is what lets the walnut read as a deliberate material choice.

Square buttons in polished die-cast zinc

Both buttons are polished die-cast zinc with a slightly curved contour, finished in brushed chrome and easy-to-clean coated. The brushed finish is the practical choice next to glossy chrome because it hides fingerprints far better.

Close view of the square brushed chrome buttons
Sigma50 square plate shown against the wall

Frameless at 15mm deep

At 246 x 164mm and 15mm deep the plate has no visible surround, so the walnut runs right to the edge and the plate sits as a panel in the wall rather than a fitting on it.

Downloads

Installation Guide
Fitting the plate to a Geberit Sigma concealed cistern

Frequently asked questions

Is the cover plate real wood?
Yes. Geberit list it as wood and flag it as a natural product, which means grain and tone vary from plate to plate. That is what you are paying for compared with a printed finish, but it does mean the plate will not match a catalogue image exactly.
What is the difference between this and the round Sigma50?
Button shape, and 1mm of depth. This square plate is 15mm deep with rectangular buttons. The round Sigma50 in the same black walnut is 14mm deep with circular buttons. Identical footprint and identical cistern compatibility.
Which cistern does a Geberit Sigma50 plate fit?
It is made for Geberit Sigma concealed cisterns using front actuation, which covers the Sigma 8cm and 12cm cisterns found in most Geberit Duofix and Kombifix frames. It will not fit a Geberit Omega cistern, which actuates from the top, and it will not fit another manufacturer's frame. Check what is behind the wall before ordering.
What is the difference between Sigma50 and Sigma21?
They are the same plate. Geberit renamed the Sigma21 range as Sigma50, so you will still see older listings and price lists using the Sigma21 name for these article numbers. If a plumber or a spec document refers to a Sigma21 plate, a Sigma50 with the same article number is the current equivalent.
How do the buttons feel to use?
The buttons are highly polished die-cast zinc with a slightly curved contour, so they have real weight behind them rather than the light click of a plastic plate. Both are easy-to-clean coated, which means fingerprints and water spotting wipe away with a damp cloth.
Can I mount it flush with the tiles?
The Sigma50 is designed to sit close to the wall with a frameless edge, so it reads as a panel rather than a raised fitting. Exact projection depends on how the cistern is set back during first fix, so agree the finished tile depth with your installer before the wall is closed up.
Is this a mechanical or an electronic plate?
Mechanical. It is a dual flush plate with two physical buttons acting on the cistern valve, so there is no battery, sensor or mains supply and nothing to fail in a power cut. If you want a touchless plate you need a different Geberit range.
How do I clean it without damaging the finish?
A soft damp cloth, then dry it off. Avoid abrasive creams, bleach, descalers and anything containing solvent, because these attack the easy-to-clean coating and cannot be undone once the surface is dulled. On the wood cover plates this matters even more than on glass.
What else do I need for a complete installation?
The Geberit frame and Sigma cistern if you are starting from scratch, plus a compatible wall hung pan such as the RAK Moon rimless wall hung WC pan. Send us the cistern model and we will confirm the plate is the right match before you order.
What if I need something tougher for a public washroom?
These are design-led plates for homes and hospitality rather than heavy-duty commercial washrooms. For a school or a high-traffic public toilet the Armitage Shanks Septa Pro M1 is anti-vandal rated and built for abuse. For a plain domestic plate at lower cost, the Ideal Standard Oleas M3 is worth a look.
What are the delivery and returns options?
We offer fast reliable UK-wide delivery with quicker express options if you need it sooner. Exact costs and timing are confirmed at checkout based on your location and the service you choose. Unused items in their original packaging can be returned within 14 days of receipt for a refund, with return postage payable by the customer on unwanted or incorrectly ordered items. If it arrives faulty, damaged or not as described, contact us within 24 hours and we will arrange a free return and a full refund. Full details are on our Refund Policy page.
Share this:

Have Questions?

Check out our Bathroom & Wet Room FAQs for answers to common questions about this product.

Buy for your business? Unlock trade pricingTrade accounts get bulk discounts, credit terms and priority dispatch.
Apply in 2 mins

Frequently Asked Questions