4 In. Square Steel Stud Box, 2-1/8 in. Deep, 30 Cu. In., with MSB Metal Stud Bracket, for 2-3/8 and 3-5/8 in. Stud Size, with Concentric and 1/2 in. KO, Raised Ground Screw (20-Pack)
4 In. Square Steel Stud Box, 2-1/8 in. Deep, 30 Cu. In., with MSB Metal Stud Bracket, for 2-3/8 and 3-5/8 in. Stud Size, with Concentric and 1/2 in. KO, Raised Ground Screw (20-Pack)
Hubbell

Hubbell 52171MSB 4 In. Square Steel Stud Box, 2-1/8 in. Deep, 30 Cu. In., with MSB Metal Stud Bracket, for 2-3/8 and 3-5/8 in. Stud Size, with Concentric and 1/2 in. KO, Raised Ground Screw (20-Pack)

  • MPN: 52171MSB
  • UPC: 626463003343
  • PPN: HBL-52171MSB
  • UNSPSC: 39121308

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Spec sheet

Description

4 In. Square Steel Stud Box, 2-1/8 in. Deep, 30 Cu. In., with MSB Metal Stud Bracket, for 2-3/8 and 3-5/8 in. Stud Size, with Concentric and 1/2 in. KO, Raised Ground Screw (20-Pack).

Features

  • Engineered with a pre-attached MSB bracket, this 4-inch square electrical box slides and locks directly onto standard 2-3/8-inch and 3-5/8-inch steel studs. This eliminates the frustrating need for separate mounting clips or makeshift field modifications, drastically reducing rough-in labor times for commercial electricians while guaranteeing a rigid, vibration-free hold behind the drywall.
  • Featuring a spacious 2-1/8-inch deep drawn steel construction, this junction box delivers an impressive 30 cubic inch volume to easily accommodate complex splices, multi-directional conductor runs, and bulky commercial wiring devices. This generous extra depth actively prevents dangerous wire crowding and pinched jackets, ensuring optimal heat dissipation and simplifying your wire management during installation.
  • Designed with precision-stamped 1/2-inch and combined 1/2-to-3/4-inch concentric knockouts on the sides, bottom, and ends, this box instantly adapts to your specific conduit routing layout. This allows technicians to punch out the exact diameter required without warping the surrounding metal wall, guaranteeing tight, secure fittings and fully protected cable entries.
  • Fully CSA certified for heavy-duty commercial, industrial, and residential applications, this unit includes a raised ground screw and specialized self-tapping hardware that virtually eliminates stripped threads. By providing a reliable, continuous grounding path and OEM-approved structural integrity, it safeguards your electrical distribution system against fault currents and ensures your rough-in sails through local electrical inspections.

Documentation & Downloads

Specifications

Additional

Volume
30 Cu. In.
Depth
2.125 in
Number of Gangs
2-Gang
Knockouts - Bottom
2 x 1/2 in, 2 x ½-3/4 in Combination
Knockouts - End
4 x 1/2 in, 2 x ½-3/4 in Combination
Material
Steel
Color
Gray
Certification
CSA Certified
Size4 in
Stud Size Compatibility2-3/8 in, 3-5/8 in
Bracket TypeMSB, Metal Stud
Knockouts - Side1 x ½-3/4 in Combination
Raised Ground ScrewYes
Wiring SystemConduit
TypeSquare Box
Bracket Setback0

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