Mechanical, Knob, Cylindrical, Lockset Function Entrance/Office, Lockset Grade 1, Ball Style, Satin Stainless Steel Lockset Finish, Keyway Type AR4, Key Type Different, Standards ANSI A156.2, No, Lockset Fire Rating 3 hr, Backset 2-3/4 in, Ligature No, For Use With Wood or Metal Doors, Includes Mounting Hardware, Item Knob Lockset, Key Material Brass, Knob Material Stainless Steel, Location Type Commercial, Lockset Performance Strength Heavy Duty, Number of Keys 2, Pins 6