Rockwell Charlotte Sliding Door Handle in Black Finish fits 3-15/16 inchCTC Screwholes on door with a Mortise lock(not included) application up to 1-3/4 inch thick sliding patio door. Non-Handed, compatible on doors with a mortise lock application. Up to 1-3/4"" sliding door thickness; Projection - 1.91"with good finger clearance Fits 3 or 4 hole mounts with 3-15/16" CTC Screwhole spacing Contains 1 outside + inside pull, thumblatch, installation fasteners (mortise lock not included)