Stanley Hardware S748-257 CD1703 Screen or Storm Door Knob Latch in Black Coated Authorized Replacement from National Hardware Stock #N178-798 Designed for wood or metal screen and storm doors with either 1-1/2, 1-3/4, or 3 inch hole spacing Fits wood doors from 5/8 to 1-3/8" thick Mounting screws included to match product finish; Includes spring loaded strike plate Interior locking mechanism provides for enhanced security 3" hole spacing; black-coated steel For screen, storm or combination doors from 3/4" to 1-1/8" in thickness Easy to install - requires only 3 holes and no mortising necessary Floating bolt in handle gives the necessary flexible action to provide easy latching with any door closer