WB FR-C 800 Series Oversized Fire-Rated Ceiling Access Doors Now Offer Sizes Up to 36″ x 36″

While Most Manufacturers Stop at 24×36, We Offer the Only Lab-Tested, Fire-Rated Ceiling Access Panels Up to 36×36!

Williams Brothers - WB FR-C 800 Series Fire-Rated Ceiling Access Door / Panel

We’re proud to announce that the WB FR-C 800 Series is now lab-tested and approved for ceiling applications up to 36″ x 36″ — surpassing the industry standard. While most manufacturers max out at 24″ x 36″ for fire-rated ceiling panels, our WB FR-C 800 Series goes further, delivering unmatched size, strength, and fire protection. Engineered for environments where fire safety is non-negotiable, this flush access panel redefines what’s possible in ceiling installations — proudly made in the USA.

Certified 1-Hour Fire Rating for Ceiling Applications

This access door delivers proven performance — lab-tested and approved for fire resistance in ceilings up to 36″ x 36″, making it the largest fire-rated option on the market.

Reliable Protection with a Clean Finish

Filled with high-temperature mineral wool insulation for enhanced fire resistance, and built with a fully concealed hinge and exposed flange for a sleek, functional look.

Advantages

  • 1-Hour Fire Rated – Industry leading door for ceiling use up to 36″ x 36″
  • Heavy-Duty Build – 16-gauge steel frame, insulated 20-gauge door
  • Thermal & Sound Control – 2″ Thick ROXUL™ mineral wool insulation
  • Clean Finish – White baked enamel, paintable to match ceilings
  • Secure Access – Knurled knob with self-latching slam catch
  • Custom Options – Stainless steel, colors, lock styles available
  • Made in the USA – Precision-built in Virginia

» VIEW WB FR-C 800 SERIES OVERSIZED FIRE-RATED CEILING ACCESS DOORS UP TO 36″ X 36″

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