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Ideal Standard Concept Easybox Slim built-in thermostatic shower mixer with faceplate

Save £120.30
Original price £402.30
Current price £282.00

Concept Easybox Slim thermostatic mixer, has been designed to fit into a 43mm wall cavity whilst being quick and easy to install. In addition to the very slim depth, of particular importance for a built-in mixer is the superior water tightness achieved using double sealing throughout. Available as a shower or bath shower mixer, with either a round or square faceplate, it is the perfect choice for any bathroom. The shower mixers are also available in shower packs combined with an Idealrain shower kit.

Product Features

  • Fits into a 43mm wall cavity
  • Double water sealing
  • Ceramic Disc flow control
  • Adjustable temperature stop
  • Safety stop button at 40°C
  • Multiple fixing options
  • Chromed metal faceplate
  • Clear coloured markings
  • Alternative Square faceplate version

Special notes

Flow rate 5.8 Litres per minute @ 0.1 bar.

Illustrated Code


  • A5877AA: Easybox Slim BI thermostatic shower mixer with on/off and round faceplate


  • A5878AA: Easybox Slim BI thermostatic shower mixer with on/off and square faceplate


Click for A5877AA Data Sheet

Click for A5878AA Data Sheet

Delivery Estimate: 2-5 working days^.

Free Standard UK Delivery is available on all products to most of the UK!*

We use our own delivery team, as well as courriers and direct shipments from manufactuers for fast, safe and secure deliveries. We advise to make arrangements with plumbers and fitters after your order has arrived. 

To find out more, visit our Delivery & Returns page.


A notification to Unbeatable Bathrooms must be made within 30 days of receipt of your goods, in writing via email to and fully outlining the relevant issue/cause for the requirement to return the said goods.


Please note that some products may not currently be in stock. If this is the case, new stock be delivered. This can sometimes result in extended delivery times.

^Estimated delivery is based on average delivery times. This timescale may vary based on individual items. If the estimated delivery date exceeds 5 days, we will notify you accordingly.

*Free Standard Delivery to UK mainland only - excluding Scotland.

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