Mechanical, Knob, Cylindrical, Lockset Function Classroom/Privacy, 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