British General (BG), a trusted name in electrical accessories, has launched its latest innovation — the Fire Rated Back Box, designed specifically for plasterboard, cavity walls, and partitions in both domestic and commercial applications. With fire resistance tested up to an impressive 120 minutes.

The box features a built-in intumescent pad that expands under extreme heat to seal the installation aperture and prevent fire spread — a crucial factor for new builds, particularly multi-storey residential projects. Compliant with Part B (Fire) and Part E (Sound) Building Regulations, the back box has also been sound tested to 54dB airborne insulation (ISO 10140-2:2021), ensuring it supports both fire safety and acoustic performance.
Designed with the installer in mind, BG’s Fire Rated Back Boxes include spring-loaded side clips for fast and secure fitting, along with multiple knockouts for flexible wiring access. With single and double gang options, and box depths of 35mm and 47mm, it’s a versatile solution that fits a wide range of wall types and electrical configurations.
An earth terminal in the base adds an extra layer of safety, and with certification to BS EN 1364-1 and a 25-year manufacturer’s warranty, this product offers lasting performance backed by trusted BG quality.
For contractors, distributors, and developers looking to meet stringent safety standards while simplifying installation, BG’s new Fire Rated Back Boxes are the smart, future-ready choice.


