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Frequently Asked Questions

What are Dormakaba concealed closers?

Dormakaba concealed closers are overhead door closers designed to be fully hidden within the door and header, delivering smooth and controlled door closing without any visible hardware on the door surface.

How do Dormakaba concealed closers compare to other brands?

Dormakaba is a globally recognized name in access control and door hardware. Their concealed closers are known for smooth operation, reliable performance, and availability in configurations that fit a wide range of commercial applications.

What adjustments can I make to a Dormakaba concealed closer?

Most Dormakaba concealed closers allow adjustment of closing speed, latching speed, and backcheck force. These settings let you fine-tune the door's behavior to match your traffic patterns and accessibility requirements.

Are Dormakaba concealed closers fire-rated?

Some Dormakaba concealed closer models are available in fire-rated configurations. If your opening is in a fire-rated corridor or assembly, confirm the specific closer model is listed for fire-rated use.

What is the installation process?

Installation requires cutting a pocket into both the door and the header frame, then mounting the closer and arm assembly inside. Professional installation is recommended to ensure correct alignment and smooth operation.

Where can I buy Dormakaba concealed closers?

National Lock Supply carries Dormakaba concealed closers and can ship nationwide. Browse our full catalog or reach out to our sales team for help selecting the right model for your project.