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MA521D-QG-622
top jamb and parallel arm installations
UL Listed for 3 Hour Fire Doors
Operating inside lever retracts the latchbolt and deadbolt simultaneously
4780LN AU Fail Safe Electrified Lever Lock, No Cylinder Override Von Duprin 98/99 Series Vertical Rod Exit Devices MA521D-QG-622Accentra (formerly Yale) AU4780LN ANSI BHMA Grade 1 Certified Cylindrical Lock, Fail Safe Electrified Lever Lock, No Cylinder Override, Augusta Lever Electric locks provide the ability to electrically lock or unlock the outside trim from a remote location. Fail Safe locks are commonly used in stair towers to release upon fire alarm activation. Fail Secure locks are used on perimeter doors or security doors to allow ingress using access control
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