Ceiling fan, 4 '' polygon, 1-1/2 '' profound. 3 arse 1/2 ''. in parvenue work and renovations. Ceiling fan rated polygon boxes can be in the installation of leaden luminescent fixtures or ceiling fans. Recommended support load for ceiling fan is 70 pounds, for fixtures is 150. non-metallic cased cable connector, mounting hardware, high-level strength treated screws, and instructions. for use in 2-hour rated walls and ceilings. UL.