FeaturesCorrosion-resistant ideal for indoor and outdoor installationsWeatherproof, raintight and dust tight when used with cast gasketed coversFS and FD boxes take standard flush wiring devicesFD boxes take devices exceeding 1.63/41.4 mm in depth under fastening earsMalleable iron for high tensile strength and ductility provides greater resistance to impact and shockBoth malleable iron and aluminum boxes have ridge top construction for positive cover/gasket/box fitAccurately tapped, tapered hub threads for tight, rigid joints and ground continuityComplete selection of covers, receptacles, plugs, gaskets and accessoriesCovers have captive stainless steel screws to speed installation, prevents loss of screwsInternal grounding screws standardSmooth, rounded integral bushing in each hub protects conductor insulationMalleable iron cover, stainless steel screws, neoprene gaskets