The 1 Gang 29mm Surface Installation Box from Crabtree is a versatile and easy-to-use accessory for surface mounting electrical wiring accessories. The box is made of high-quality plastic and is finished in a white color. It is designed to accommodate a single 1-gang wiring accessory, such as a switch or socket. The box also features a knockout hole for easy cable entry. · · · Accepts 1 Gang Moulded Accessory. · · Assembly arrangement Surface mounted housing · · Mounting direction Vertical · · Material Plastic