Corrosion-resistant ideal for indoor and outdoor installations|Weatherproof, raintight and dust tight when used with cast gasketed covers|FD boxes take standard flush wiring devices|FD boxes take devices exceeding 1-5/8 in depth under fastening ears|Malleable iron for high tensile strength and ductility provides greater resistance to impact and shock|Both malleable iron and aluminum boxes have ridge top construction for positive cover/gasket/box fit|Accurately tapped, tapered threads for tight, rigid joints and ground continuity|Complete selection of covers, receptacles, plugs, gaskets and accessories|Covers have captive stainless steel screws to speed installation, prevents loss of screws|Smooth, rounded integral bushing in each hub protects conductor insulation|Accommodate wiring devices such as switches and receptacles|Provide excellent service in areas where boxes are subject to rough usage|Serve as pull boxes for conductors|Permit access to conductors for maintece|Provide openings for making splices|Allow connections for branch conduit runs|Blank bodies for special conduit entrance arrangements|Without knockouts