Appleton Conduit Outlet Box, Type GRFT (3) 3/4" Hubs, Malleable Iron

GRFT Type Conduit Outlet Box, Explosion-Proof/Dust-Ignitionproof, Malleable Iron, Unilet, Includes: Internal Ground Screw and O-Ring, Internally Threaded Surface Cover with 3.38 Inch Opening, 18.0 Cubic Inches and (3) 3/4 Inch Threaded Hubs. For use with Threaded Metal Conduit.