The Bell Outdoor Ceiling Fan Box provides secure mounting and weatherproof wiring junction for outdoor-rated fans or luminaries. The 4 in. round box is constructed of heavy-duty PVC with an integrated galvanized steel support bracket, which supports fans up to 70lbs or luminaries up to 150lbs.  The optional rain collar provides a weatherproof seal for fan canopies. It is UL, NEC and NEMA 3R compliant.