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.
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.
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.