In interior applications, the design of the FRFD series fire-rated floor doors to maintain the fire rating of a 2-hour floor-ceiling assembly is one of the best options. The anchor flange on the angle frame structure enables casting into concrete. It also includes a U.L. listed 165-degree fusible link in the flat aluminum diamond plate cover for automatic shutting and latching in the case of smoke or fire. 

Other features you can find include:

Material: Aluminum door & top frame.

Lock/Latch: Stainless steel slam latch assembly with an interior release.

Flange: 3 x 3 x 1/4 aluminum top frame with thermal break 3 1/2 x 2 x 11 gauge stainless steel bottom frame

Hinge: Type 316 stainless steel continuous piano hinge

Finish: Mill finish.

Contact Acudor now at 1-888-622-8367 to purchase them for your construction projects! We also offer different sizes to ensure they fit perfectly on any roof opening.