Corrosion-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 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 screwsSmooth, rounded integral bushing in each hub protects conductor insulationAccommodate wiring devices such as switches and receptaclesProvide excellent service in areas where boxes are subject to rough usageServe as pull boxes for conductorsPermit access to conductors for maintenanceProvide openings for making splicesAllow connections for branch conduit runsBlank bodies for special conduit entrance arrangementsRidge top constructionWithout knockouts