1 Gang 25mm Galvanised Stainless Steel Metal Flush Back Box

A reliable foundation for your electrical fittings, this 1 gang metal back box offers secure, flush mounting for switches and sockets. Made from galvanised steel with a corrosion-resistant finish, it’s built for durability in both domestic and light commercial settings. The 25mm depth provides ample space for wiring, while multiple knockouts allow flexible cable entry from the sides or rear. Available in a robust silver finish, this metal back box meets standard UK installation requirements and suits single-gang faceplates. Ideal for new builds or rewires where a sturdy, code-compliant enclosure is essential. Part of our core range of essential electrical accessories, it pairs seamlessly with any standard switch or socket plate. For more options, explore our full selection of back boxes.

Key Features

• 1 gang size (72mm x 72mm) for standard UK switches and sockets
• 25mm internal depth for adequate wiring space
• Galvanised steel construction with silver finish for corrosion resistance
• Multiple side and rear knockouts for versatile cable entry
• Includes internal mounting clips for secure device installation
• Suitable for flush mounting in plaster, drywall, or masonry
• Complies with standard UK electrical accessory dimensions

FAQs

How do I install this metal back box?

Cut a recess into your wall to match the box dimensions (72mm x 72mm), then secure it using screws or plaster. The pre-drilled flange holes allow for mechanical fixing before plastering. Once set, mount your switch or socket using the internal clips—no additional brackets needed. This metal back box is designed for straightforward, code-compliant installation.

Is this back box suitable for use with all standard UK sockets?

Yes, this 1 gang metal back box accepts any standard UK single-gang switch, socket, or plate that fits a 68–70mm cut-out. Its 25mm depth accommodates typical wiring loads, and the internal clips ensure a snug fit. Always verify compatibility with your specific fitting, but it works with most common brands and types.