Cal-Royal SC Series, Extra Heavy Duty Mortise Locks with Clutch, Grade 1 - Classroom Lock SC8463, F29 Hollon FD-4020E Drop Safe Front Loading Latch bolt is deadlocked when

Latch bolt is deadlocked when outside lever is locked or when deadbolt is projected

Pushing and turning button locks outside knob requiring use of key until button is manually unlocked

Retrofits into existing hardware-no modifications required

interlocking two hardened ball bearing with the strike to increase jimmying resistance

Cal-Royal SC Series, Extra Heavy Duty Mortise Locks with Clutch, Grade 1 - Classroom Lock SC8463, F29 Hollon FD-4020E Drop Safe Front Loading Latch bolt is deadlocked whenClassroom Function: Deadbolt thrown or retracted by key from outside. Inside thumbturn cylinder retracts deadbolt but cannot project it. Can retrofit Schlage L9000 Series mortise lock without drilling any additional holes on the door for sectional and escutcheon trims Fully reversible design No exposed mounting screws on outside and inside trims Outside lever has a Clutch (Free Wheeling design). The lever rotates when the lever is locked preventing