What is a flush bolt on a door?
Flush bolts are recessed into the door edge (top and bottom) and slide upward or downward into the jamb (or threshold) to keep the door closed. Flush bolts are available in square and rounded corners and in various sizes and finishes to match up with your existing or new door hardware.
What are flush bolts used for?
Flush bolts are used to secure the inactive leaf of a pair of doors, projecting into the frame head and into a floor strike. In this application, the active leaf would typically have a lockset which latches into a strike mounted on the edge of the inactive leaf.
Can manual flush bolts be used on fire rated doors?
For pairs of doors this typically means that automatic flush bolts must be used, but NFPA 80 includes a potential exception to this rule – manual flush bolts may be used on pairs of fire doors leading to rooms that are not normally occupied by people (where acceptable to the AHJ).
How does a flush door bolt work?
Automatic flush bolts are projected and retracted without any manual operation required. When the active leaf is opened, the flush bolts are retracted, allowing the inactive door to open. When the active leaf is closed, the flush bolts are automatically latched again.
Are flush bolts secure?
Flush Bolts Most commonly used at the meeting point of a pair of rebated doors. When doors are shut the flush bolts are concealed and therefore secure. The length of bolt is detemined by the height of the door. The taller the door the longer the top bolt will need to be.
How does a flush bolt work?
Flush bolts are used on pairs of doors to secure the inactive leaf, projecting into the frame head and into a floor strike. An automatic flush bolt is projected when the active leaf closes and depresses a trigger on the edge of the door. When the active leaf is opened, the automatic flush bolt retracts.
What is a door coordinator?
A door coordinator helps to ensure that the correct door leaf closes first so the doors can close and latch properly (here’s a video). BUT – when the door has manual flush bolts and no closer on the inactive leaf, the coordinator serves no purpose. The inactive leaf is closed and latched manually (by a person).
What is Astragal?
A t-astragal molding is a functional door molding designed to close the clearance gap created by the side edges on one or both matching doors; they also stop the swinging door and help reduce sound when closed. The square side of the t-astragal attaches to a door stile edge on either sliding or swinging doors.
Are flush bolts allowed on egress doors?
In Business, Factory, and Storage occupancies, manual flush bolts are allowed on the inactive leaf when the doors are serving less than 50 people, or when the building is sprinklered and the inactive leaf is not needed for egress width .
What are automatic flush bolts?
An automatic flush bolt is projected when the active leaf closes and depresses a trigger on the edge of the door. When the active leaf is opened, the automatic flush bolt retracts. Constant latching flush bolts are a type of automatic bolt – the bottom bolt is a regular automatic flush bolt,…
What is a flush mount bolt?
The door flush bolt is a flush mounted dead bolt lock that performs a similar job to a barrel bolt of holding a slave door (secondary door of a rebated pair for eg.) closed. Most commonly when there are a pair of doors for example it is used to hold the slave door (door that opens second) fixed closed.
What is a flush head bolt?
Flush Bolts and Coordinators [Draft Script] Flush bolts are used on pairs of doors to secure the inactive leaf, projecting into the frame head and into a floor strike. In this application, the active leaf would typically have a lockset which latches into a strike mounted on the edge of the inactive leaf.