Adams Rite 4085 01, Header Bolt, Std Height

Designed to add a top-of-door third locking point for pairs of doors with an MS pivoted bolt deadlock and 4015 threshold bolt in the active leaf. This additional bolt triggered by the pivoted MS bolt expands in a "scissors" action to center itself in its strike as it rises. This action saves the key holder from the difficulty of lining up the doors with three separate strikes, even if doors are misaligned due to faulty installation or settling. The 3 point features may be added to any basic MS1851S, MS1851 or MS1851SNSI deadlock.