Gap Fillers

Fire Door Gap Filler Solution

Active Fire Door Gap Filler Products can be installed on Top, Strike Side, Hinge Side, and Undercut of Metal & Wood Fire Rated Doors and Frames up to 90 minutes. Gap Filler Products are installed with steel fasteners within countersunk hole cutouts to ensure flush installation, providing proper latching. All Gap Fillers can be cut to size and additional countersunk holes can be added by customer without interruption of UL listing. Gap Filler Bars are sold in 3′ or 4′ unless special orders are requested.

Active Gap Fillers
Current
Excessive Clearance
Active
Gap Filler Needed
1/4″ 1/8″
3/8″ 1/4″
1/2″ 3/8″

 

Active Fire Door Gap Fillers are coated with an Antimicrobial Material to continuously protect against potentially harmful microbes and pathogens to fill excessive gap clearances on both wood and steel fire rated doors and frames up to 90 minutes.

Note to Customer: The maximum gap between the frame and door shall not exceed 1/8″. When the gap between the door and frame interface is larger than 1/4″ then a soffit extension is required (2016-NFPA 80: 6.3.1.7.4, 2016-NFPA 80: 6.3.1.7.5) Soffit Extension must be the same length as gap filler. A soffit extension will automatically be added to your cart in reference to NFPA 80 requirements.

All widths of Active Fire Door Gap Filler Products reflect fire rated door width of 1 ¾”

* THIS PRODUCT WILL MEET THE REQUIREMENT OF UL 10C, UBC 7-2, NFPA 252 AND NFPA 80

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Clear

Please tell us if the door itself is metal or wood.

2019-NFPA 80

  • 6.3.1.7 Clearances
    • 6.3.1.7.2* The clearances between the top and vertical edges of hollow metal doors and the frame, and the meeting stiles of doors swinging in pairs, shall be 1⁄8in.± 1⁄16in. (3.18 mm ± 1.59 mm).
  • 4.8.4 Clearance.
    • 4.8.4.1 The clearance under the bottom of a door shall be a maximum of ¾”.
    • 4.8.4.4 Where the bottom of the door is more than 38 inches above the finished floor, the maximum clearance shall not exceed 3/8” or as specified by the manufacturer’s label service procedure.
  • 5.2.3.5.2 (6) Door clearances do not exceed clearances listed in 4.8.4 and 6.3.1.7.

2016-NFPA 80

  • 6.3.1.7 Clearances
    • 6.3.1.7.2 – The clearances between the top and vertical edges of the door and frame, and the meeting edges of doors swinging in pairs, shall be 1/8” – 1/16” for steel doors and shall not exceed 1/8” for wood doors.
  • 4.8.4 Clearance
    • 4.8.4.1 – The clearance under the bottom of a door shall be a maximum of ¾”.
    • 4.8.4.2 – Where the bottom of the door is more than 38 inches above the finished floor, the maximum clearance shall not exceed 3/8” or as specified by the manufacturer’s label service procedure.
  • 5.2.3.5.2 (6) – Door clearances do not exceed clearances listed in 4.8.4 and 6.3.1.7.

2013-NFPA 80

  • 6.3.1.7 – Clearances
    • 6.3.1.7.1 – The clearances between the top and vertical edges of the door and frame, and the meeting edges of doors swinging in pairs, shall be 1/8” – 1/16” for steel doors and shall not exceed 1/8” for wood doors.
  • 4.8.4 – Clearance.
    • 4.8.4.1 – The clearance under the bottom of a door shall be a maximum of ¾”.
    • 4.8.4.2 – Where the bottom of the door is more than 38 inches above the finished floor, the maximum clearance shall not exceed 3/8” or as specified by the manufacturer’s label service procedure.
  • 5.2.3.5.2 (6) – Door clearances do not exceed clearances listed in 4.8.4 and 6.3.1.7.

2010-NFPA 80

  • 6.3.1.7 Clearances
    • 6.3.1.7.1 – The clearances between the top and vertical edges of the door and frame, and the meeting edges of doors swinging in pairs, shall be 1/8” – 1/16” for steel doors and shall not exceed 1/8” for wood doors.
  • 4.8.4 Clearance
    • 4.8.4.1 – The clearance under the bottom of a door shall be a maximum of ¾”.
    • 4.8.4.2 – Where the bottom of the door is more than 38 inches above the finished floor, the maximum clearance shall not exceed 3/8” or as specified by the manufacturer’s label service procedure.
  • 5.2.4.2 (5) – Door clearances do not exceed clearances listed in 4.8.4 and 6.3.1.7.

Custom Orders

  • Do you have custom requirements?

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