Mechanical, Knob, Cylindrical, Lockset Function Passage, Lockset Grade 1, CRXK Knob Style, Satin Stainless Steel Lockset Finish, Keyway Type SC4, Key Type Different, Standards ANSI A156.2, BAA, UL 10C Positive Pressure, No, Lockset Fire Rating 3 hr, Backset 2-3/4 in, Ligature Yes, For Use With Wood, Steel and Fiberglass Doors, Includes Mounting Screws, Item Ligature Lever Lock, Key Material Brass, Lockset Performance Strength Heavy Duty, Number of Keys 2