Great residential door knob replacement Solid brass cylinders ANSI Grade 3 rated door knob. Satin chrome finish. Fits doors between 1 3/8 to 1-3/4" thick. 2-3/8" to2-3/4" adjustable backset Kwikset keyway. A privacy lock is a lock that is designed to allow someone to quickly lock a room from the inside for privacy.
