The SIMPLEX® by KABA® mechanical pushbutton lockset helps eliminate problems and costs associated with issuing, controlling and collecting keys and cards. 1 user code is easy to manage for all users. Lock is programmed via keypad. No batteries required. Vandal-resistant, all-metal keypad. Nonhanded, field reversible. Knob locket is 6-1/16L x 2-3/16W x 3D. Easily installs on wood or metal doors. This listing is for each.