Appleton FS-1EXT Malleable Iron 1-Gang Cast Box Extension 1-Inch Certified

UNILETS FS Type Rigid Top Extension Box, Material: Malleable Iron, Size: 1 IN Extension, Mounting: Box, Standard: UL 514A, UL File Number E2527, CSA C22.2 No. 18.1, CSA 001472 Certified, NEMA FB-1, For Use With Unilets FS Single Gang Cast

Special Features:Accurately tapped, tapered threads for tight, rigid joints, ground continuity;Both malleable iron and aluminum boxes have ridge top construction for positive cover/gasket/box fit;Corrosion-resistant ideal for indoor and outdoor installations;Malleable iron for high tensile strength and ductility provides greater resistance to impact and shock;Weatherproof, raintight and dust tight when used with cast gasketed covers