The BBI-CBF back box provides a mild steel enclosure for an Cameo® keypad. It is designed for installation in concrete and masonry applications. Conduit knock-outs are provided on the top and bottom. The back box, BBI-CBF is the optional mounting hardware that is part of the Crestron Home total control system. The BBI-CBF secures a Crestron series Cameo C2N-CBF-P in a CONCRETE or BRICK wall ONLY.