Deadbolt Mortise Commercial Lockset Grade Not Graded Series N Lockset Finish Satin Chrome Keyway Type AR4 Key Type Different Standards ANSI A156.5 ADA Compliant No Lockset Fire Rating 3 hr Backset 2 3/4 in Ligature Resistant No Cylinder 6 Pin For Door Thickness 1 3/4 in For Use With Wood or Metal Doors Includes (2) Keys Strike Plate Material Chrome Number of Keys 2 Pins 6 Security Type Heavy-Duty Strike Square Corner Strike Dim. 1-1/8 in x 3-1/2 in Throw Length 1 in