The Surface MiniMag locks are designed with a 1-7/8" width to keep undersized openings within code. These locks are ideal solutions for traffic control on narrow-style interior or perimeter doors. The RCI 8371 Surface MiniMag is for single outswinging doors. The RCI 8372 Surface MiniMag is used for double outswinging doors without mullions. These electromagnetic locks install perfectly alongside most automatic door operators or stop-mounted door hardware. They reduce installation time and eliminate the need for extra brackets. Designed to overcome residual magnetism. Stabilizing 4 bolt "drop stop" mounting, 3/16" (5mm) mounting bracket, and keyhole mounting for ease of installation.