Residential Entrance mortise lock with Emergency Egress
Latch bolt by thumb piece outside and knob/lever inside, except when thumb-piece is locked by stop in front; then latch bolt by key outside and knob/lever inside
Deadbolt by key outside and turn piece inside. When deadbolt is thrown, stop is automatically activated making outside thumb piece rigid. Inside knob/lever retracts latch and Deadbolt simultaneously but DOES NOT free outside thumb piece
1" (25mm) throw deadbolt with saw-proof inserts is standard equipment.