Fail-Safe's FB/IB was designed as a low-cost, energy-efficient answer to the problems of repeated replacement and down times in areas where broken lamps could increase owner liability. The one-piece, injection molded, UV stabilized, polycarbonate refractors and diffusers completely surround the backplate, leaving no exposed metal. UL/cUL listed for wet locations. The FB/IB is specifically designed for use in public access areas where vandalism may occurr. Ideal for building perimeters, corridors, stairwells, schools and dormitories.