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Square galvanized steel electrical box with bracket and multiple knockouts

Hubbell Incorporated

Hubbell Incorporated RACO 257H Electrical Box 42 cu in Square 2 Gang Galvanized Steel

SKU CH-BD7P-0TN8Y

Galvanized steel square box holds 42 cu in across two gangs with 12 half-inch and 12 three-quarter-inch side knockouts plus five half-inch and two three-quarter-inch back knockouts, UL listed

  • TypeElectrical Boxes & Covers
  • 42 cu in capacity handles larger wire bundles
  • UL listed for code-compliant installations
  • Galvanized steel construction resists corrosion
  • Square 2-gang design fits standard devices
  • 12 side knockouts per size simplify cable routing

Square 2-gang electrical box

The RACO 257H is a galvanised steel electrical box with a square profile and an H-type bracket. It provides 42 cu in of capacity for wiring in residential or light commercial installations. The unit is UL Listed and ships new from stock.

Upgrade from smaller or single-gang boxes

When a project needs two device openings in one enclosure, this 2-gang box replaces single-gang units or shallower 1-gang alternatives. The jump is worth it when conduit entries exceed the knockout count of a smaller box or when the 42 cu in volume satisfies fill calculations that a lesser capacity cannot meet.

Capacity and headroom for conduit-heavy runs

The box offers five 1/2 in. and two 3/4 in. back knockouts plus twelve 1/2 in. and twelve 3/4 in. side knockouts for flexible raceway routing. It comfortably handles multiple cable bundles and device yokes within its 42 cu in volume, but runs out when the project demands three or more gangs or a deeper enclosure than the 2 1/8 in nominal depth.

Highlights

  • 42 cu in capacity handles larger wire bundles
  • UL listed for code-compliant installations
  • Galvanized steel construction resists corrosion
  • Square 2-gang design fits standard devices
  • 12 side knockouts per size simplify cable routing

Specifications

BrandRACO
TypeElectrical Boxes & Covers

Questions about this item

What bracket type does the RACO 257H box use for mounting?

It uses an H-style bracket that attaches to studs or joists before drywall is applied.

Which knockout sizes are on the sides of this 42 cu in box?

The sides have twelve 1/2 in. knockouts and twelve 3/4 in. knockouts for conduit entry.

Does the galvanized steel box need any coating touch-up after installation?

The factory galvanised finish resists corrosion; no additional coating is required under normal indoor conditions.

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