The 1521 Pocket Door Privacy Lock for 1-3/8 In. thick doors, fits in a standard 2-3/8 In. Backset - 2-1/8 In. Bore, automatically latches, and has a separate locking button. Automatically unlocks when the latch button is pushed. Universal handed, self-latching lock operation. Finish: Satin Nickel Door Thickness: 1-3/8 In. Material: Steel