For use on interior bedroom and bathroom mobile home doors. Both bell-shaped knobs locked or unlocked by turn button inside. Outside knob unlocked by emergency key. 7/8 in edge bore. Door prep 2-1/8 in cross bore, 1 in x 2-1/4 in latch face. Backset of 2-3/8 in standard and adjustable 2-3/8 in and 2-3/4 in optional. Door thickness 1-3/8 to 1-3/4 in. Cylinder 5-pin. Faceplate 1 in x 2-1/4 in. Strike of 2-1/4 in high full lip. Bolt 3/8 in throw. Reversible for right or left hand doors. ANSI/BHMA A156.2 Grade 3.