Cal-Royal NM8453 Series, Extra Heavy Duty Mortise Locks, Grade 1 - SECTIONAL TRIM ENTRANCE Function F20 F86, Left-Hand (VS-ZS) Car Keys and Fobs ADVANCED SECURITY: Protect what matters

ADVANCED SECURITY: Protect what matters most with a built-in alarm and certified highest AAA rating in residential security

Turning inside knob or operating key in outside knob releases button automatically

Has 4 different hook lengths

Not in the case of the Hercular since it is the only Grade 1 Deadlock with an adjustable backset

Cal-Royal NM8453 Series, Extra Heavy Duty Mortise Locks, Grade 1 - SECTIONAL TRIM ENTRANCE Function F20 F86, Left-Hand (VS-ZS) Car Keys and Fobs ADVANCED SECURITY: Protect what mattersEntrance Function: Latch bolt operated by lever from either side except unless outside lever is locked by push button rocker. Deadbolt projected by key from outside or by thumbturn from inside. Both deadbolt and latch bolt are re tracted by inside lever simultaneously. Outside lever remains locked unless lock is released by push button rocker manually. *** Auxiliary deadbolt latch. Any door in commercial or institutional buildings where the best