Baldwin Estates Mortise Lock. Residential Entrance, Knob x Knob. Latch bolt by knob from either side, except when outside knob is locked by stop in front; then latch bolt by key outside & knob inside. Deadbolt by key outside & turn piece inside. When deadbolt is thrown, stop is automatically activated making outside knob rigid. Inside knob retracts latch and deadbolt simultaneously but DOES NOT free outside knob. Backset: 2-3/4", RH, Oil Rubbed Bronze finish.