Designed for wood or metal screen and storm doors 1-3/4? hole spacing. Fits wood doors from 5/8" to 2" thick. Interior locking mechanism provides for enhanced security. Mounting screws included to match product finish. Includes spring loaded strike plate. Note: for 2? thick doors, pan head machine screws 8/32? x 2-3/8? are required and must be purchased separately (qty 2). Visual-pack.