Cal-Royal SC Series, Extra Heavy Duty Mortise Locks with Clutch, Grade 1 - Office with Automatic Unlocking SC8056 Trim:HE (Hollow or Cast) - Wide Escutcheon Thumb latch can be mounted

Thumb latch can be mounted in centered or offset position to accommodate 3 or 4 hole doors

Installs with a screwdriver into standard door prep in approximately 30 minutes (No wiring necessary)

Purchase a spare so you're never locked out

Spring Loaded Active Relocker Bolt

Cal-Royal SC Series, Extra Heavy Duty Mortise Locks with Clutch, Grade 1 - Office with Automatic Unlocking SC8056 Trim:HE (Hollow or Cast) - Wide Escutcheon Thumb latch can be mountedOffice with Automatic Unlocking Function: Latch bolt retracted by knob lever from either side unless outside is made inoperative by key outside or by rotating inside thumbturn. Outside knob lever unlocked by key outside or thumbturn. Rotating inside knob lever simultaneously retracts latch bolt and unlocks outside knob lever. Auxiliary latch deadlocks bolt when door is locked. Inside knob lever is always free of immediate egress. Can retrofit Schlage