Electromagnetic Lock, Surface Mount, Opening Action Electromagnetic, Steel, Amp Draw @ 12V 250mA/12V DC, Amp Draw @ 24V 150mA/24V DC, Input Voltage 12/24V DC, Projection from Wall (In.) 1 3/4 in, Features For Use with Door Closers, Total Projection (In.) 1 3/4 in, Holding Force (Lb.) 1,200, Armature Length (In.) 6 in, Armature Width (In.) 2 3/4 in, Armature Depth (In.) 1/2 in, Lock Body Length (In.) 8 in, Lock Body Width (In.) 3 in, Lock Body Depth (In.) 1 3/4 in, Strike Plate Length (In.) 6 in