Schlage Orbit Satin Chrome Hall & Closet Door Knob

Performance complies with ANSI (American National Standards Institute) A156.5, Series 4000. UL (Underwriters’ Laboratories) rated. 3 hour fire door. Door range: 1-3/8″ – 2″. Adjustable backset. Square corner, T-strike. Door frame strike reinforcer with 3″ screws. 7/8″ wrought brass trim ring. Both knobs always unlocked.