Knightsbridge 25mm Single Pattress Box - White Rounded Edge

The Knightsbridge 25mm single pattress box is an 86mm x 86mm flush-mounting back box in white thermoset resin, designed specifically for use with Knightsbridge's Curved Edge (CU) series of wiring accessories. The rounded profile matches the contoured edge of CU faceplates, ensuring a flush fit between the wall surface and the cover plate once installed.

Designed for dry-lining installations in residential and light commercial settings, the 25mm recessed depth allows the box to sit within standard stud walls and partition boards without needing to chase into solid masonry. The thermoset resin construction resists cracking during installation and provides dimensional stability over time. The IP20 rating makes the box suitable for general interior locations away from direct water contact.

The white finish integrates cleanly with white and light-coloured walls, minimising visual impact where the box edge may be visible around the faceplate. The anti-microbial properties tested to ISO 22196:2011 reduce bacterial surface growth, making the box suitable for healthcare, hospitality and food preparation environments where hygiene standards require tested materials. The 25-year warranty covers manufacturing defects across the product's operational life.

Product Specification Sheet

Is this compatible with other Knightsbridge ranges?

No. The rounded edge profile is designed specifically for the Knightsbridge Curved Edge (CU) series. Standard square-edge faceplates from other Knightsbridge ranges will not sit flush against this box. Use a standard square-edge pattress for non-CU series accessories.

Does the box include an earth terminal?

No. This pattress box does not include an earth terminal. Earthing continuity must be maintained through the accessory itself or via a separate earth connection to the metal mounting lugs on the box.

What wall types is the 25mm depth suitable for?

The 25mm depth suits dry-lining installations in plasterboard, stud walls and partition boards where the box can be mounted flush within the cavity. For solid walls the box requires chasing to the full 25mm depth plus clearance for cable entry.

What are the anti-microbial properties?

The thermoset resin is tested to ISO 22196:2011, which measures antibacterial activity on plastic surfaces. This reduces bacterial surface growth and makes the box suitable for healthcare, hospitality and food preparation environments where hygiene standards require tested materials.