Steel City 521511234P Outlet Boxes

Pick by the wiring method and the environment. This Steel City box is steel, square, surface mounted, dry location only, and is the workhorse for conduit and MC in commercial interiors. For residential nonmetallic cable work a PVC box like the Cantex EZ Series multi-gang residential outlet box is the usual pick. For hazardous locations you need an explosionproof malleable iron body, such as the Appleton GRJ Series or GRJS Series conduit outlet box, and a steel 4-square will not satisfy that classification.

The Steel City 521511234P is a steel square box rated for interior wall or ceiling mounting and is not weatherproof, so for an exposed exterior location step to a box built for wet locations. The Mulberry Royal Mountie is a weatherproof die-cast aluminum 1-gang outlet box. For surface conduit work outdoors, the Thomas & Betts 2IH3-1 Red-Dot 2-gang conduit outlet box comes with three 1/2 inch hubs so conduit lands on a threaded hub rather than a knockout.

No - the Steel City 521511234P is a steel square outlet box for wall or ceiling mounting in ordinary interior locations, listed under UL E2969. Classified areas call for an explosionproof box: the Appleton GRJ Series and GRJS Series are explosionproof malleable iron conduit outlet boxes, the GRJS being a universal body, and the Appleton GRT75 is a malleable iron round conduit outlet box in the same family of fittings.

It mounts to a wall or ceiling surface and carries 17 knockouts, which is what gives you the freedom to bring EMT or cable in from the sides, the back, or the ends without adding a fitting body. Square steel 4-square boxes like this one are the standard choice for commercial conduit work where a device or a junction point has to land on a stud face or deck.

Yes, it carries UL listing E2969. That is the figure to cite on a submittal or an inspection sheet for a steel outlet box.

Yes. It is configured for one outlet, so a single device plus a 4-square cover or a raised device ring gets you a finished receptacle or switch location. The cover or mud ring is a separate item and is not part of the box.

The Steel City 521511234P is a 4 inch by 4 inch by 1-1/2 inch square steel box with 21 cubic inches of capacity and 17 knockouts, so conduit or cable connectors can enter from many directions. The Cantex EZ Series is a PVC multi-gang residential outlet box, so it is nonmetallic and gang-configured rather than a single square steel box. Choose the steel square box where you are pulling conduit or need a metallic enclosure; choose the PVC multi-gang where you are roughing in multi-device residential walls with nonmetallic cable.

The Steel City 521511234P is a steel box with 17 knockouts, so each conduit entry is opened in the field and terminated with a connector. If you want factory hubs instead, the Thomas and Betts 2IH3-1 Red-Dot is a 2-gang conduit outlet box with three 1/2 inch hubs, supplied in packs of 100. The Appleton GRT75 is a malleable iron round conduit outlet box for threaded conduit runs.

It is a bulk electrical item: 50 boxes per carton, with the shipping carton measuring 20.625 x 8.25 x 8.187 inches. Weight runs 70 lbs per 100 boxes. Handy numbers if you are staging material by floor or building a job pack.

Manufacturer part number 521511234P from Steel City, steel construction in a silver finish. That MPN is what to quote when you are matching boxes already installed on a job so the rough-in stays consistent.

The Steel City 521511234P is a silver steel square box, 4 inch by 4 inch by 1-1/2 inch, 21 cubic inches, 17 knockouts, UL E2969, shipped 50 per outer carton at 70 lbs per 100. The comparable bodies use different materials for different environments: the Appleton GRJ and GRJS series are malleable iron explosionproof bodies, and the Mulberry Royal Mountie is die-cast aluminum for weatherproof 1-gang use. A common approach is to standardize on the steel square box for dry interior device locations and carry the iron or aluminum bodies only where the environment requires them.