Steel City 58371 1/2 Utility Boxes

The 58371 1/2 utility box has 14.5 cubic inches of volume, which is the number you work from for NEC box fill. Count the device, clamps, and grounds against that 14.5 cubic inches before you pull in conductors. If your fill calculation runs past it, you need a deeper box or a box extension rather than this one.

It is a surface mounted housing, the classic steel handy box you screw to a block wall, column, or exposed framing and run conduit to. It is not a flush device box with plaster ears for drywall work, so if you are cutting into finished wall you want a different style of box.

Yes. The 58371 1/2 carries UL listing E2969, which is the reference a plumbing-and-electrical inspector or an institutional spec reviewer will want to see on a steel outlet box.

The Steel City 58371 1/2 is a drawn steel surface-mounted utility box intended for dry interior work. For an exposed exterior device location, the Mulberry Royal Mountie weatherproof outlet box is a die-cast aluminum 1-gang weatherproof box, and the Thomas & Betts 2IH3-1 Red-Dot is a 2-gang conduit outlet box with three 1/2 inch hubs for threaded conduit runs. Both are built for conduit-fed outdoor device boxes rather than interior surface mounting.

One device. It is a single gang utility box, and the mounting direction is vertical, so the device opening runs the tall way, which is how a switch or a single receptacle sits in a handy box. For two devices side by side you want a 2-gang box such as the Thomas and Betts 2IH3-1 Red-Dot conduit outlet box.

Ten knockouts, which is what lets you feed through and branch out of a single box on an exposed conduit run instead of adding a junction. The box is drawn steel, so unused knockouts stay closed until you punch them.

Steel like the 58371 1/2 is the choice for exposed conduit and EMT work where the raceway is the ground path and the box takes mechanical abuse. For nonmetallic cable in residential framing, a PVC box such as the Cantex EZ Series multi-gang residential outlet box is the usual pick. For a 240 V range or dryer connection neither applies; that calls for a dedicated box like the Pass and Seymour P242RRD range and dryer box.

Yes. The Steel City 58371 1/2 is a steel box, so it bonds through the metal raceway system. If the job runs nonmetallic cable in residential walls, the Cantex EZ Series is a PVC multi-gang residential outlet box, and the Pass and Seymour P242RRD is a thermoplastic range and dryer box for that specific appliance outlet. Those are nonmetallic bodies, so an equipment grounding conductor has to be carried to the device.

The Steel City 58371 1/2 is a single-outlet box with 14.5 cubic inches of capacity and ten knockouts, so it carries one device. For multi-gang work, the Cantex EZ Series is a PVC multi-gang residential outlet box and the Thomas and Betts 2IH3-1 Red-Dot is a 2-gang conduit outlet box with three 1/2 inch hubs.

Not directly. The Steel City 58371 1/2 is a rectangular drawn steel utility box with ten knockouts that mounts vertically on a surface and takes a standard utility box cover. The Appleton GRT75 is a malleable iron round conduit outlet box, so the body shape and cover pattern differ and it is fed by threaded conduit rather than knockout connectors. They are not interchangeable in the same opening.

Use a box built for that circuit. The Steel City 58371 1/2 is a 14.5 cubic inch single-outlet steel utility box sized for general-purpose devices. The Pass and Seymour P242RRD is a thermoplastic range and dryer box made specifically for appliance outlet installations.

It ships 50 to the outer carton, and the shipping weight works out to 52.38 lbs per 100 boxes. The carton measures 11.5 x 9 x 11.375 inches, useful if you are staging material on a multi-floor rough-in.