Active Vs Inactive Door Leaf

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 inactive leaf is the leaf which typically stays closed with flush bolts or surface bolts and is opened when a larger opening is needed. 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.

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Active vs inactive door leaf.

On double egress doors astragals can be attached to either leaf since both are active. When the active leaf is closed the flush bolts are automatically latched again. 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. This leaf will be the active leaf.

Active door leaf vs. The active leaf is the leaf upon which the locking hardware is installed and is used most often. When the active leaf is opened the flush bolts are retracted allowing the inactive door to open. When referring to the active leaf on double doors we are talking about the door that has the keyed lock installed in it.

Many double door applications will only require one leaf in the pair to have a keyed lock. 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. Also note that astragals are actually required on 3 hour fire rated pairs of doors. The astragal can be attached to the active entries exits or inactive leaf depending on the function and application.

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. Double doors typically have an active leaf and and inactive leaf. Knowing which door is the active leaf also helps with determining the handing of the. 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.