Menu
Menu
Your Cart

12.5mm Marmox Shower Niche - 300mm x 400mm (External size - 400mm x 500mm)

12.5mm Marmox Shower Niche - 300mm x 400mm  (External size - 400mm x 500mm)
12.5mm Marmox Shower Niche - 300mm x 400mm  (External size - 400mm x 500mm)
12.5mm Marmox Shower Niche - 300mm x 400mm  (External size - 400mm x 500mm)
12.5mm Marmox Shower Niche - 300mm x 400mm  (External size - 400mm x 500mm)
12.5mm Marmox Shower Niche - 300mm x 400mm (External size - 400mm x 500mm)
Price: £41.65 (£49.98 inc VAT)
  • Product Code: A1-5431
  • Delivery Time: 1-3 working days
  • Brand: Marmox
  • (Tech. support: : 01634835290)
  • Model and Size: 300mm x 400mm
Our ratings on 30-10-2025:
Google My Business Reviews
4.8 out of 5
Show other sizes

12.5mm Marmox Shower Niche - 300mm x 400mm (External size - 400mm x 500mm)

Length: 400mm
Width: 300mm
Thickness: 12.5mm

Marmox Shower Niche is comprised of an extruded polystyrene core coated on either side with a thin but robust layer of fibreglass reinforced polymer concrete. It is an elegant way to provide extra space for small shower items. Marmox Shower Niche is fixed to the wall usually on a frame, so that the front lip of the niche is flush with the Marmox Multiboard on the wall. The joints between the shower niche and the Multiboard are sealed together with Marmox Waterproof Tape.

CHARACTERISTICS

  • Made with 12.5mm thick board and fit wall cavities 100mm or deeper,
  • Ready to use, with guaranteed conformity and the size,
  • Ready to tile,
  • Lightweight and easy to work with,
  • Completely waterproof,
  • Provides thermal insulation,
  • With practical benefits and elegant appearance,
  • Fits cavity 100mm or deeper.

INSTALLATION

  • Slide the shelf into the desired position.
  • Use a pencil and mark a straight line to indicate the final shelf position.
  • Screw through the sides of the niche in the areas that are in line with the shelf 
  • Make sure shower niche is screwed fully into the shelf but do not over tighten.
  • For a watertight seal, use Marmox MSP360 Adhesive & Sealant’ or Marmox Waterproofing Tape.
  • Position the niche into the desired area, between the studs (at 800 centres).
  • Use a minimum of a 50mm screw and large washer in all of the corners.

      

Brand: Marmox Model and Size: Minilay Linear Standard Grate
Delivery Time: 1-3 working days
Marmox Minilay Linear Standard Grate is a stylish brushed stainless steel shower drain cover.Click on Other types ..
£36.94
£44.33 inc VAT
Add to Cart
Brand: Marmox Model and Size: 2400mm x 1200mm - 115.20m2
Delivery Time: 2 - 3 working days
12.5mm Marmox Multiboard Waterproof Insulation Board is a highly versatile, BBA-certified construction board designed for a multitude of applications, combining superior water resistance, thermal insulation, and structural strength. Manufactured from XPS (extruded polystyrene) foam, which is then re..
£1,465.56
£1,758.67 inc VAT
Add to Cart
Brand: Marmox Model and Size: 1500mm x 800mm - offset draining
Delivery Time: 1-3 working days
24mm x 1500mm x 800mm Marmox Showerlay 360 is a offset draining shower tray designed for use in tiled bathrooms and walk in showers. It is made of high density polystyrene coated on both sides with a unique blend of reinforced polymer concrete. They pre-sloped flooring panels with integral drai..
£184.70
£221.64 inc VAT
Add to Cart
Brand: Marmox Model and Size: 1200mm x 600mm - 0.72m2
Delivery Time: 1-3 working days
50mm Marmox Fireboard is a lightweight, A1-rated non-combustible insulation board that combines fire protection, thermal insulation, and acoustic performance in one render-ready panel. It’s suitable for internal and external walls and ceilings, especially in high-risk or multi-storey buildings.CHAR..
£31.27
£37.52 inc VAT
Add to Cart
Brand: Marmox Model and Size: 600mm x 1200mm - 3.60m2
Delivery Time: 1-3 working days
20mm Marmox Curved Multiboard is made from standard Marmox Multiboard, scored widthways to allow the board to curve around a radius. It will allow you to fit all shapes of your bathroom or creatively create irregular shapes in a fast and price competitive way. They can be used to create archways, cu..
£77.91
£93.49 inc VAT
Add to Cart
Brand: Marmox Model and Size: 100mm x 10m
Delivery Time: 3 - 5 days
100 Marmox Self-adhesive Waterproof Tape used to create a permanent waterproof seal around shower formers and the adjoining floor, the wall and the internal corners. It is a highly elastic, resistant to ageing, self-adhesive butyl rubber coated on a polypropylene non-woven tape: rigid in m..
£30.44
£36.53 inc VAT
Add to Cart

Related Products

Brand: Marmox Model and Size: 100mm x 10m
Delivery Time: 3 - 5 days
100 Marmox Self-adhesive Waterproof Tape used to create a permanent waterproof seal around shower formers and the adjoining floor, the wall ..
£30.44
£36.53 inc VAT
Add to Cart
Brand: Marmox Model and Size: 290ml
Delivery Time: 2 - 3 working days
290ml Marmox MSP360 Premium Adhesive and Sealant is an ultra strong adhesive, ideal for sealing around shower trays, baths, bathroom fittings, kitchen..
£7.08
£8.50 inc VAT
Add to Cart
Brand: Marmox Model and Size: 290ml
Delivery Time: 2 - 3 working days
290ml Marmox MSP360 Premium Adhesive and Sealant is an ultra strong adhesive, ideal for sealing around shower trays, baths, bathroom fittings, kitchen..
£7.08
£8.50 inc VAT
Add to Cart
This product is listed in the following categories and systems (click to show).