WB Floor Hatches & Doors

Williams Brothers - WB FD 8500 Series Flush Fire-Rated Aluminum Diamond Plate Floor Hatches


Williams Brothers’ Hatches & Doors are designed to provide efficient and secure service access to critical areas under floors for a wide range of commercial, industrial, institutional and residential applications. Ideal for both new and retrofit building projects, our roof hatches and floor doors are suitable for use on a variety of surfaces enabling easy access to mechanical, electrical, plumbing and other building systems.

Sizes & Options

Williams Brothers’ Hatches & Doors are available in a wide range of sizes designed to fit common framing dimensions with special sizes and modifications available upon request. Popular sizes include 24×24, 24×36, 30×30, 36×36, 36×48 and more. We also offer many additional features such as drainage troughs, locks, gasketing, choice of finishes and custom color paints.


Williams Brothers prides itself on the differences we bring to our hatches. Our dedication to manufacturing quality makes us the choice for construction companies, architects, and engineers that demand the best access doors in the world. Once you see what separates Williams Brothers from other manufacturers, you too will appreciate and demand the Williams Brothers difference.

Product Highlights

Standard: The WB R-TPS 8400 Series Recessed Floor Hatch (Concrete/Tile) features a single recessed door designed to accept concrete or tile and a rugged trough frame. Designed for flush installation in new cast-in-concrete applications, it is reinforced for pedestrian traffic and can safely handle 300 pounds per square foot (psf) loading.

Fire-Rated: The WB FD-8500 Fire Rated Floor Hatch has flush diamond plate cover for utility and general purpose applications. Featuring the latest fire-resistant technology, the FD-8500 incorporates an automatic, heat triggered closing mechanism to protect floors above from fire below.

Other popular roof and floor access door models include: WB roof hatches, Bilco roof hatches, roof hatch railing systems, Bilco floor doors, and safety posts and ladder ups for specialty needs.