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Square galvanized steel electrical box with multiple knockout holes

Hubbell Incorporated

Hubbell Incorporated RACO 239 Electrical Box 30.3 cu in 2 Gang Galvanized

SKU CH-8Z0F-7JRQM

A galvanized steel square electrical box with two gangs, 30.3 cubic inches capacity, and multiple half-inch and three-quarter-inch knockouts for conduit connections, UL listed for safety compliance

  • Product typeElectrical Boxes & Covers
  • 3 cu in capacity fits more conductors
  • Galvanised steel resists corrosion in damp locations
  • Two-gang square design accepts standard device plates
  • Thirteen ½ in. and six ¾ in. knockouts simplify cable entry
  • UL listed for code-compliant installations

Square 2-gang electrical box

The RACO 239 is a galvanised steel box with a 30.3 cu in capacity, designed to house wiring connections for two devices in residential or commercial installations. Its square profile and UL listing make it suitable for standard conduit or cable entries where a listed enclosure is required.

Installers needing two-device capacity

Electricians running multiple circuits into a single location will find the eight 1/2 in. and four 3/4 in. side knockouts plus three 1/2 in. and two 3/4 in. back knockouts convenient for various conduit sizes. Projects that demand a deeper box, a different gang count or a non-metallic enclosure should select an alternative model.

Behaviour under sustained load

The steel construction and galvanised finish resist corrosion and maintain structural integrity when the enclosure is fully populated and carrying continuous current. Heat from loaded conductors dissipates through the metal walls, and the UL listing confirms the box meets temperature-rise requirements for prolonged operation.

How it compares

Measured against everything we stock in Electrical Enclosures & Cabinets, at today’s prices. Recalculated every night.

Price $3.99
Cheaper than about 94% of the 1,411 comparable items (median $39.99).

Specifications

Product
Brand nameRACO
Product typeElectrical Boxes & Covers

Questions about this item

What mounting hardware do I need to secure this 4-inch square box to a stud or joist?

The box has no integral bracket, so you must supply wood screws, lag bolts, or other fasteners that suit the framing material and the mounting holes on the back and sides.

Can I mix 1/2-inch and 3/4-inch conduit in the same box without exceeding the 30.3 cu in fill limit?

Yes, the box provides eight 1/2-inch and four 3/4-inch side knockouts plus three 1/2-inch and two 3/4-inch back knockouts; total conductor volume must stay within the 30.3 cu in capacity marked on the box.

How do I verify the galvanized finish meets the UL listing after installation?

Look for the UL mark stamped on the steel; the gray galvanized coating should be intact on all surfaces, including knockout edges, confirming the listing covers the installed assembly.

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