The Hubbell 72171MSB is a heavy-duty 4-11/16" square steel outlet box built for professional electricians and contractors working with metal stud framing. Designed for commercial and residential rough-in work, this box installs quickly and securely in 2-3/8 in. and 3-5/8 in. metal studs using the included MSB metal stud bracket — no separate hardware required. With a generous 42 cu. in. capacity and a 2-1/8" depth, it provides ample room for wiring devices, splices, and conduit connections. Concentric knockouts in 1/2" and 3/4" sizes offer flexible conduit entry from multiple directions, while the raised ground screw ensures a reliable equipment ground on every installation. A dependable choice for commercial tenant improvements, multi-family builds, and any job site where code compliance and installation speed matter.

Specifications

Box Shape Square
Box Size 4-11/16 in.
Depth 2-1/8 in.
Volume 42 cu. in.
Material Steel
Bracket Type MSB Metal Stud Bracket (included)
Compatible Stud Sizes 2-3/8 in. and 3-5/8 in.
Knockout Sizes 1/2 in. and 3/4 in. (concentric)
Ground Screw Raised ground screw included
Gangs 1-Gang
Weight 0.89 lbs
Manufacturer Hubbell