The industry answer to excessive clearances

Remedy excessive clearances without replacing fire doors with our UL approved fire door accessories

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Door Stop for Steel Doors

This fire door accessory is the basis for the Crown Fire Door Stop System. When installed onto your fire-rated door frame, the product restores compliance when fire door gaps exceed NFPA-80 requirements. Use this for steel doors with excessive clearances up to 1/2".
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Door Stop for Wood Doors

The System for wood doors is comprised of the Fire Door Stop and either the Top Protector or the Vertical Edge Protector, or both. These critical components protect the edges and extend the performance of a wood fire door, in a fire situation, when excessive clearances are present.
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Steel & Wood Door Extension

This fire door accessory corrects excessive undercuts up to 2". UL tested, listed, and approved for both wood and steel fire doors, the Crown Fire Door Extension is completely adjustable to attain an NFPA-80 code compliant clearance.

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Latch Protector for Steel & Wood Doors

The Crown Latch Protector corrects latch engagement issues due to excessive clearances when installed as part of the Crown Fire Door Stop System. This fire door accessory is UL listed for use on wood or steel fire door assemblies.

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--- All products patent pending in the U.S. and Canada ---

THE CROWN FIRE DOOR STOP SYSTEM IS TESTED AND LISTED WITH UL!

The Crown Fire Door Stop System is UL approved for excessive clearances on wood and steel fire doors.The Crown Fire Door Extension has been UL approved to correct excessive undercuts on wood and steel fire doors. All Crown accessories are fire-rated for up to 90 minutes. Applying these products does not increase or decrease the fire door assembly's existing fire rating.
No other products are UL approved, with a 90-minute rating, specifically for excessive clearances.