Cal-Royal SC Series, Extra Heavy Duty Mortise Locks with Clutch, Grade 1 - Entrance Function SC8453, F20 Trim:JS or outside lever when cylinder

or outside lever when cylinder is unlocked by key

so the locking handle set features interior thumb turn only

Yale® Design Elements Single Cylinder Deabolts

Limited Mechanical Warranty

71 cubic feet capacity

Cal-Royal SC Series, Extra Heavy Duty Mortise Locks with Clutch, Grade 1 - Entrance Function SC8453, F20 Trim:JS or outside lever when cylinderEntrance Function: Latch bolt retracted by lever from either side unless outside lever is locked by operating toggle button. Deadbolt projected by key from outside or by thumbturn from inside. Both deadbolt and latch bolt are retracted by inside lever simultaneously. Latch bolt is deadlocked when outside lever is locked or when deadbolt is projected. Outside lever is unlocked by toggle button if deadbolt is retracted. Inside lever is always free for