Model FD for access to utilities in the walls or ceilings of stairwells, shafts, corridors and any other areas where fire ratings are important. Frames are equipped with masonry anchors and bolt hols to facilitate installation in wall construction.
Doors are furnished with an automatic closer and latch automatically when door is released.
The door panel has 2" of insulation in a sandwich-type construction. The FD access door has proved practical for use when reduction in sound transmission through access openings is desired.
The FD Series can be installed in fire rated walls or ceilings and maintains the fire barrier ratings. These panels carry Underwriters Laboratories 1-1/2 hour "B" label rating for wall applications and the Warnock Hersey label for 3 hour non-combustible and 1 hour combustible floor-ceiling assemblies.