Steel Center Gap

Latch-Protector

Vertical Fire Door Extension for Paired Egress Steel Doors

  • UL listed for up to 180 Minutes on Steel Doors.
  • UL Listed for excessive clearances Up to 1″ between doors.
  • Does not increase or decrease your fire door assembly’s existing fire rating.
  • US Patent Nos. 9,151,106 & 9,518,422
  • Canadian Patent Nos. 2,846,726 & 2,939,255

Latch-Protector

Vertical Fire Door Extension for Paired Steel Doors

  • UL listed for up to 180 Minutes on Steel Doors.
  • UL Listed for excessive clearances Up to 1″ between doors.
  • Does not increase or decrease your fire door assembly’s existing fire rating.
  • Tested Under NFPA-252, ANSI/UL 108 with Hose Stream, UL 10C, CAN/ULC S104-10
  • This is a handled product; LH/RH Active Doors, LH/RH In-Active Doors
  • Easy Installation; Does Not Require Removal of Doors.
  • US Patent Nos. 9,151,106 & 9,518,422
  • Canadian Patent Nos. 2,846,726 & 2,939,255

Vertical Fire Door Extension for Steel Double Egress Doors

Vertical Fire Door Extension for Steel Double Egress Doors

  • UL listed for up to 180 Minutes on Steel Doors.
  • UL Listed for excessive clearances Up to 1″ between doors.
  • Does not increase or decrease your fire door assembly’s existing fire rating.
  • Tested Under NFPA-252, ANSI/UL 108 with Hose Stream, UL 10C, CAN/ULC S104-10
  • This is a handled product; LH/RH Active Doors, LH/RH In-Active Doors
  • US Patent Nos. 9,151,106 & 9,518,422
  • Canadian Patent Nos. 2,846,726 & 2,939,255

--- All Products US Patent Nos. 9,151,106 & 9,518,422 | Canadian Patent Nos. 2,846,726 & 2,939,255 ---

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. Applying these products does not increase or decrease the fire door assembly’s existing fire rating.

Crown is the ORIGINAL, UL-listed, 90-minute wood door solution and the ONLY 180-minute steel door solution for excessive clearances and gaps.