Cal-Royal SC Series, Extra Heavy Duty Mortise Locks with Clutch, Grade 1 - Classroom Security Lock w/ Deadbolt and Auxiliary Latch SC8458, F34 Rim & Mortise Standard 3-15/16" Spaced Handle Mounting

Standard 3-15/16" Spaced Handle Mounting Holes

UL Fire Rated Latch

3/4" Thick Steel Door

Door détente device automatically locks safe

Cal-Royal SC Series, Extra Heavy Duty Mortise Locks with Clutch, Grade 1 - Classroom Security Lock w/ Deadbolt and Auxiliary Latch SC8458, F34 Rim & Mortise Standard 3-15/16" Spaced Handle MountingClassroom Security Lock w Deadbolt and Auxiliary Latch Function: Latch bolt retracted by lever from either side unless outside lever is locked from inside or outside by key. Deadbolt projected or retracted by key outside. Operating inside lever retracts both bolts and unlocks outside lever. Auxiliary latch deadlocks latch bolt when door is locked or latch bolt deadlocks when deadbolt is projected. Inside lever is always free. Can retrofit Schlage