Perko Flush LatchThis door latch is made from a chrome plated zinc allpoy and features a flush finish. The 1-5/8" diameter hole is easy to install and is designed for doors between 1/2" - 3/4" thick. The face plate features dimensions of 2-1/4" x 2"Perko 0922 Flush Latch Installation Instructions Using the template (found in the PDF below), locate and drill a 1-5/8" diameter hole in the door; Remove the machine screws and retaining cup; Remove the self tapping screw and washer folding latch bar; Install the latch body from outside the door.; Reversing steps 3 and 2 re-attach the latch bar and retaining cup; Note: The retaining cup is reversible to allow for mounting on righthand or lefthand doors.Click here for Perko Flush Latch Installation Instructions