Nostalgic Warehouse Victorian Plate with Keyhole Victorian Knob, Double Dummy, Oil-Rubbed Bronze Traditional mounting for vintage or new doors. Double Dummy Set Coordinates with Nostalgic Warehouse's Premium Grandeur line Standard door thickness range is 1-3/8-Inch to 1-3/4-Inch. Comes with standard 2-3/8 backset Mortise lock versions available for vintage doors 3-Year mechanical and finish warranty Traditional mounting for vintage or new doors. Double Dummy Set Coordinates with Nostalgic Warehouse's Premium Grandeur line For use on interior doors that require only a push/pull function. Mounts directly to door. Mortise lock versions available for vintage doors 3-Year mechanical and finish warranty