Concealed Flange Insulated Fire Rated
Concealed Flange Insulated Fire Rated access doors feature a textured frame and bead to allow drywall joint compound to be applied in sufficient thickness to conceal the flange.These doors are insulated and fire rated by Underwriters Laboratories for 1.5 hour "B" label in walls and by Warnock Hersey for 3 hours in ceilings.