The M1KCWB is a two-piece, surface mount metal wall box. It features 1/2" and 3/4" electrical conduit knockouts, along with various mounting holes on the front that permit mounting of either a ELK-M1KP(B) or ELK-M1KP2 Keypad backplate. Applications include: commercial jobs, schools, businesses, factories, etc., or virtually any situation where a Keypad needs to be surface mounted with no ability to run or conceal the wiring within the structure's walls.