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Galvanised steel two-gang cover with captive screws and rounded corners

Hubbell Incorporated

Hubbell Incorporated RACO 878 2-Gang Galvanized Steel Box Cover

SKU CH-9BMP-6467N

Galvanized steel cover for two-gang electrical boxes with captive screws and rounded corners

  • TypeElectrical Boxes & Covers
  • Fits 2-gang exposed work installations
  • 141 in. diameter opening suits 30-50A receptacles
  • Meets 2014 NEC 250.146(A) without bonding jumper
  • Captive screws and rounded corners simplify mounting
  • Zinc pre-coated steel cover resists corrosion

Application and fit

The RACO 878 cover fits 4-11/16 in. square electrical boxes for exposed work installations. It is designed for 30-50A receptacles with a 2.141 in. mounting diameter. The cover can also serve as a single-gang wall plate when needed. Galvanized steel construction provides durability in standard indoor environments.

Capacity and headroom

The cover accommodates two gangs and includes captive screws with rounded corners for secure mounting. It meets 2014 NEC Article 250.146(A) requirements, eliminating the need for a bonding jumper when installed with crushed corners. Hardware and installation instructions are packed in a labeled poly-bag for convenience.

Thermals and power

The zinc pre-coated steel cover does not generate heat or draw power in normal use. It acts as a passive protective barrier for receptacle wiring. No active cooling or thermal management is required for this component. Noise is not a factor with this static installation accessory.

Highlights

  • Fits 2-gang exposed work installations
  • 141 in. diameter opening suits 30-50A receptacles
  • Meets 2014 NEC 250.146(A) without bonding jumper
  • Captive screws and rounded corners simplify mounting
  • Zinc pre-coated steel cover resists corrosion

Specifications

BrandRACO
TypeElectrical Boxes & Covers

Questions about this item

Will the 2.141 in. diameter receptacle opening fit the 30-50A outlet I already have installed?

Yes, the cover is designed for a 30-50A receptacle with a 2.141 in. diameter opening, matching standard configurations for that amperage range.

How can I verify the cover meets the 2014 NEC Article 250.146(A) grounding requirement after installation?

The crushed-corner design and captive screws provide the required grounding path without a separate bonding jumper, so a secure mount to a grounded box confirms compliance.

Does the poly-bag include mounting screws for the receptacle, or do I need to buy them separately?

Required hardware for mounting the receptacle is packed in the poly-bag with the cover, so no separate screw purchase is needed.

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