Privacy knob lockset for bedroom and bathroom doors. Turn button on interior knob, turning button locks both knobs, lock may be opened by an emergency key in exterior knob, dual-option spring latch (drive-in, square, and radius faceplates) standard. 1/4" radius full-lip strike. Adjustable backset (2-3/8" to 2-3/4"). Fits standard door preps. 25 year mechanical warranty. 5 year finish warranty. ANSI Grade 3 security and performance.