Steel Door

Steel Doors

Steel Top and Side Gap

Steel Top and Side Gap

If your steel fire door has a gap larger than 1/8 inch, (+/- 1/16th), it is not code compliant. For both top and vertical gaps up to 1/2 inch, use the Crown Fire Door Stop System.

Steel Vertical/Latch Gap

Steel Vertical/Latch Gap

For fire door gaps up to 1/2 inch on the latch side, use the Fire Door Stop Vertical System. For true smoke seal, use the Crown Fire Door Stop System. If latch engagement is an issue, add the Crown Latch Protector.

Steel Top Gap

Steel Top Gap

Excessive clearances at the top of your steel fire door may be remedied using only the Fire Door Stop Top System. For true smoke seal use the Crown Fire Door Stop System.

Steel Center Gap

Steel Center Gap

Excessive clearances at the center of steel doors swinging in pairs can be remedied using our Fire Door Stop System. Contact us if you need more information.

Steel Excessive Undercut

Steel Excessive Undercut

For gaps of up to 2 inches at the bottom of your steel or wood fire door, use our fully adjustable Crown Fire Door Extension.

--- 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.