Cal-Royal SC Series, Extra Heavy Duty Mortise Locks with Clutch, Grade 1 - Entrance Function SC8453, F20 Trim:JS 1-1/4" Solid Steel Active Locking

1-1/4" Solid Steel Active Locking Bolts

so the locking handle set features interior thumb turn only

or outside lever when cylinder is unlocked by key

and a grooved door seal

Cal-Royal SC Series, Extra Heavy Duty Mortise Locks with Clutch, Grade 1 - Entrance Function SC8453, F20 Trim:JS 1-1/4" Solid Steel Active LockingEntrance 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