This is the Tell Manufacturing Inc. CL100004 SV series privacy Lock for commercial and industrial interior privacy and bathroom doors. It offers push button locking inside; knob with emergency opening outside and the inside knob or closing of the door releases the push button. It comes in a satin stainless steel finish and has been UL listed for A label (3 hour) single swing door. This lock complies with ANSI A 156.2, Series 4000, Grade 2 requirements. This lockset is packed with 2-3/4" back set, Schlage C (SCC) keyway, and T strike square corner for wood frame construction. Knob and lever locksets are completely reversible for left or right hand doors.