Hampton Products International V666 Screen & Storm Door Latch KnobHampton Products International V666 Screen & Storm Door Latch Knob Features:; For out-swinging wood or metal doors; Fits doors 7/8" to 1-1/8" thick; Installation hole spacing 3"; Installs in three 1/4" holes; Backset from jamb (door stop) 1"; Installs with spring loaded strike plate; Covers most previous installation drillings in door; Aluminum finish; Carded