Attributes . Explosionproof, dust-ignitionproof; Furnished with internal ground screw; Malleable iron bodies have high tensile strength and ductility, provides great resistance to corrosion, impact and shock; Accurately tapped, tapered hub threads for tight, rigid joints and ground continuity; Furnished with malleable iron cover and cover gasket; General purpose wiring; Externally threaded body with internally threaded cover; Smooth, rounded integral bushing in each hub type box protects conductor insulation; Internal ground screw standard; Complies with a wide range of classified area requirements; Corrosion-resistant ideal indoors or out; For pulling of wires; Connect conduit lengths and change direction of conduit runs; Provide access for maintenance . Names