Mechanical, Lever, Cylindrical, Lockset Function Classroom, Lockset Grade 1, Style Flat with Return, Lockset Finish Satin Chrome, Keyway Type AR4, Key Type Different, Standards ANSI A156.2, Yes, Lockset Fire Rating 3 hr, Backset 2 3/4 in, Ligature No, Cylinder Core Type Not Included, Features Freewheeling Lever Action, For Use With Metal or Wood Doors, Handle Material Zinc, Includes Latch, Mounting Hardware, Strike, Item Door Lever Lockset