PDQ Grade 2 SD Heavy Duty Non-Handed Commercial Cylindrical Lever Lock Front Door/Office Entrance Function Keyed Different Satin Chrome Finish 26D 3 hour fire rated UL latch,and 4-7/8 ASA Strike Included 2-3/4 Backset with square corners Fits 1-3/8-Inch to 1-3/4-Inch wood or metal doors and easy to install Fits Standard 2-1/8 2 6 pin solid brass keys SC1 keyway keyed to 5 pins ADA Aproved (American Disabilities Act)