Standard latch is for 2 3/8" backset Fits any door between 1 3/8" to 2 1/4" thick with a 2 1/8" bore standard door prep Supplied with a Standard Rotation Latch & Strike Plate Knob Overall Dimensions: 2 1/8" projection x 1 1/2" clearance EMTEK Square Rosette Privacy Set with Matching Finish Helios Lever - Choice of Left/Right Handing and 7 Finishes - 5210HLOLHUS19 - Left Handed (LH) - Flat Black (US19)