On double egress doors astragals can be attached to either leaf since both are active.
Active vs inactive door leaf.
Double doors typically have an active leaf and and inactive leaf.
When the inactive leaf closes completely it triggers the coordinator to release the active leaf and allow it to close.
The inactive leaf can have a vertical rod exit device or flush bolts that secure the pair of doors within the opening if there is no mullion.
This automatic latching is accomplished by a small spring loaded button on the edge of the flush bolts which when depressed will extend the flush bolts and remain latched.
Astragal must be applied to pull side of active leaf since placing the stragal on the inside of the inactive leaf will interfere with the active door closing.
Astragal must be applied to pull side of active leaf since placing the stragal on the inside of the inactive leaf will interfere with the active door closing.
When the active leaf is closed the flush bolts are automatically latched again.
Active door in a pair of doors the leaf of a pair that is actively used ahc architectural hardware consultant active door in a pair of doors the leaf of a pair that is actively used ahc architectural hardware consultant anti friction bearing any bearing capable of effectively reducing friction.
Many double door applications will only require one leaf in the pair to have a keyed lock.
When the active leaf is opened the flush bolts are retracted allowing the inactive door to open.
If both leaves of the pair are opened and the active leaf begins to close first the coordinator will hold the active leaf open slightly allowing the inactive leaf to close.
The astragal can be attached to the active entries exits or inactive leaf depending on the function and application.
Knowing which door is the active leaf also helps with determining the handing of the.
Also note that astragals are actually required on 3 hour fire rated pairs of doors.
Although mortise lock exit devices can be installed onto single door openings the mortise lock exit device is often installed onto the active leaf of a pair of doors.
This leaf will be the active leaf.
Active door leaf vs.
