Use with pre-drilled door: 11" x 3-7/16", proj. 2-3/8" Front: 1" x 2-1/4" Preparation Depth: 3-5/8" Backset: 2-3/8" or 2-3/4" Door Thickness: 1-3/8" to 1-3/4" Latch uses no springs and operates by gravity alone. Reversible, fits right- or left-handed doors. Can be accomodated for certain doors thickness