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Flush Bolts & Door Coordinators
At National Lock Supply, we carry a complete line of flush bolts and door coordinators built for commercial double-door installations. Flush bolts secure the active and inactive leaves of a double door by retracting into the floor and header, providing a clean, concealed locking solution. Door coordinators work alongside flush bolts to ensure the inactive leaf closes and latches before the active leaf, keeping your double doors operating in the correct sequence every time.
Frequently Asked Questions
What are flush bolts and coordinators?
Flush bolts are locking rods that secure the inactive leaf of double doors, while coordinators ensure both leaves close in the correct sequence. At National Lock Supply, we provide UL-listed flush bolts and coordinators for fire and non-fire doors.
How do they work together?
Flush bolts lock one door leaf in place, while the coordinator ensures that the inactive leaf closes first so the active leaf can latch properly. This is critical on fire-rated double doors.
What types of flush bolts exist?
Manual flush bolts, automatic flush bolts (fire-rated), and constant-latch bolts. Automatic models engage/disengage without manual operation.
Where are they commonly used?
In double door assemblies for schools, offices, and hospitals, especially in corridors and fire exits.
How do flush bolts compare to surface bolts?
Flush bolts are concealed in the door edge, while surface bolts are mounted externally. Flush bolts are cleaner, more secure, and required on many rated openings.
Are flush bolts ADA compliant?
Yes, when automatic models are used. Manual bolts are often out of reach and not compliant for accessible egress.
Are flush bolts UL listed?
Yes, UL-certified automatic flush bolts are required for fire-rated double doors.
What finishes are available?
Satin Chrome, Brass, Oil-Rubbed Bronze, and Stainless Steel.
Do coordinators fit all double doors?
They must match door width and handing, ensuring the inactive leaf closes before the active leaf.
Why buy flush bolts & coordinators from National Lock Supply?
We stock fire-rated automatic flush bolts and heavy-duty coordinators, with expert advice for compliance on commercial double doors.