Description The RGL Surface Back Box 40mm PBB05/GN is a durable and practical mounting accessory designed for access control and security devices. With a 40mm depth, it provides ample space for secure cable management and easy installation. This surface back box offers a professional solution for housing components in commercial, industrial, and public sector environments. Surface Back Box 40mm Features: 40mm back box Allows for conduit entry Choose from green or black Compatible with stainless steel plates (85 x 85mm)