Passage lever locksets maximum security - dorian" clear pack round corner latch and strike finish=satin nickel For hall and closets. Both levers always free; no locking mechanism. For hall and closet doors. Door prep: 2-1/8 inch cross bore, 1 inch edge bore, 1 inch x 2-1/4 inch latch face. Backset: Adjustable to 2-3/8 inch or 2-3/4 inch. Door thickness: 1-3/8 inch to 1-3/4 inch. 2-1/4 inch doors optional. Faceplate: 1 inch x 2-1/4 inch. Strike: 2-1/4 inch full lip. Bolt: 1/2 inch throw. Handing: Non-handed. Ansi/bhma: Grade 2. Ada: Satisfies section 4.13.9 ada requirements.