Fire-Rated Rolling Service Door - 631 Model 631

Fire-Rated Rolling Service Door - 631 Model 631

FireKing® Model 631

Fire-rated service door model 631 is a smaller fire door with UL/ULC ratings. The FireKing® Model 631 rolling fire-rated service door offers superior protection wherever a small UL listed fire door is required.

​Additional safety and protection features are available, including: Fire Sentinel® time-delay release device, FireLite® vision lites, smoke detectors, horns and strobes

Ideal Applications Include


Product Specifications
Standard Max Width14' (4267 mm)
Standard Max Height12' (3658 mm)
CurtainPainted galvanized
Standard baked-on paint finish available in gray, tan, white or brown
GuidesThree structural steel angles.
PowderGuard® Weathered finish with black powder coat.
Labels available for masonry or non-masonry applicationsUL/ULC 1-1/2 hr
UL/ULC 3 hr
UL oversized door
Mechanical auto resettable hoist (non-motorized)Enables easy drop test and reset of fire door in seconds
Fusible link for added safetySeparates at 165°F (74°C) to automatically close the door in case of fire
Viscous governor technologyControls rate of door descent during a fire while reducing noise and vibration for quieter door operation
Innovative planetary gear designEnsures years of reliable service and drop-out performance
Fire doors are in compliance with:National Fire Protection Association (NFPA-80)
Underwriters Laboratories (UL & ULC)
New York City (MEA)
State of California (CSFM)


  • 2-year material and workmanship

​​Fire-Rated Door 631 Mounting Chart

steel fire door mounting chart

Slat selection and finishes
Fire door slats are available in curved or flat profile in either galvanized steel. Galvanized slats are finished with a rust-inhibitive, roll-coating process that incorporates baked-on prime paint, and a baked-on polyester top coat of gray, tan, white or brown.

Standard Exterior Color

  • white color swatch


  • gray color swatch


  • tan color swatch


  • brown color swatch


Actual door color may vary from the digital representation shown here. Actual color samples are available by request through your Overhead Door™ Distributor.

Powder Coat Color Options

PowderGuard® Premium powder coat options are available in approximately 200 colors as well as custom matching to specification.

Powder Guard Coat Colors

Door Options

  • Operation: push-up, chain hoist, crank and electric motor (RHX® or RSX®)
  • Fire Sentinel® time-delay release device
  • FireLite® vision lites (F265 slat profile only)
  • UL-listed brush-type smoke seals
  • Smoke detectors
  • Horns and horns with strobes
  • Cylinder locking bottom bar with mortise cylinder
  • Wind load (FBC, TDI, Miami-Dade)
  • PowderGuard® Premium powder coat finish options are available in approximately 200 colors as well as custom matching to specification.
  • PowderGuard® Zinc and PowderGuard® Weathered finishes
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