Combination Entry Mechanical Pushbutton Knobset Kaba Ilco Simplex Series mechanical pushbutton locks offer a convenient way to control access between public and private areas. There are no keys or cards to manage, no computers to program, no batteries to replace, and combinations can be changed in seconds without removing the lock from the door. Single access code—one easy to manage code for all users Lock is easily programmed via keypad without removing lock from the door Weather Resistant Thousands of possible combinations Factory-handed for left hand doors; easily field reversible 2-3/4" Backset (Latch) ASA Strike Plate For Door thicknesses 1-3/8"to- 2-1/4"