GR Type Conduit Outlet Box, Explosion-Proof, Dust-Ignitionproof, Aluminum Iron, Unilet, GRL Hub Type. Includes: Internal Ground Screw and O-Ring, Internally Threaded Surface Cover With 3.38 Inch Opening, 18.0 Cubic Inches and (2) 1/2 Inch Threaded Hubs. For Use with Threaded Metal Conduit.
- Diameter: 1/2 in
- Material: Aluminum
- Material: Aluminum
- Cubic Inches: 18 in³