Electromagnetic Door Holder, Wall Mount, Die Cast Metal, Amp Draw @ 24V .015, Input Voltage 24VAC/DC, 120VAC, Projection from Wall (In.) 13/16, Total Projection (In.) 2-5/8, Holding Force (Lb.) 25 to 50, Lock Body Length (In.) 4-5/8, Lock Body Width (In.) 2-3/4, Lock Body Depth (In.) 13/16, Strike Plate Length (In.) 2, Strike Plate Width (In.) 2, Strike Plate Depth (In.) 1-5/8, Mfr. Series 1509, Powder Epoxy Aluminum Finish, Standards UL Listed FM Approved, For Use With Fire Panels