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Galvanized zinc single-gang mud ring, square, 5/8 inch raised, 4 by 4 inches

Hubbell Incorporated

Hubbell Incorporated RACO 768 Mud Ring 1 Gang Galvanized Zinc Square Box Type

SKU CH-FGC2-NQ5K6

Single-gang plaster ring for square boxes adds 4.50 cubic inches capacity with 5/8-inch raised galvanized zinc construction

  • Product typeElectrical Boxes & Covers
  • Single-gang plaster ring with 4.50 cubic inches capacity
  • Galvanized zinc construction resists corrosion in damp locations
  • Raised 5/8 inch depth fits standard square boxes
  • Center-blanked design allows flexible device mounting
  • Tapped ears provide secure screw attachment points

Single-gang plaster ring

The RACO 768 mud ring is a single-gang plaster ring made from galvanized zinc for square electrical boxes. It is designed for installers who need a flush mounting surface for devices in plaster or drywall applications. The ring provides a 4.50 cubic inch capacity for wiring space. It suits both new construction and remodel work where a plaster key is required.

Galvanized zinc construction

The galvanized zinc body resists corrosion in damp or humid environments. Tapped ears allow secure attachment to the box with screws. A centre-blanked design keeps the opening clear for device mounting. The 5/8 inch raise sets the device face at the correct depth for standard plaster finishes.

Replaces damaged or missing rings

This ring replaces a cracked, corroded or lost plaster ring on an existing square box. The upgrade is worth it when the original ring no longer holds a device firmly or when the plaster key has deteriorated. It restores a code-compliant mounting point without replacing the entire box.

How it compares

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

Price $1.99
Cheaper than about 97% of the 1,411 comparable items (median $39.99).

Specifications

Product
Brand nameRACO
Product typeElectrical Boxes & Covers

Questions about this item

What does the 4.50 cubic inch capacity mean for wire fill?

It limits the total conductor volume to 4.50 cubic inches per NEC box-fill rules, so count each wire, clamp and device accordingly before installing.

What opening size does this mud ring fit?

It mounts on a standard 4 inch by 4 inch square box, matching the 4 inch length and width shown in the specifications.

How do the tapped ears secure the ring, and what mistake should I avoid?

The tapped ears accept mounting screws that thread directly into the ring; the common error is using the wrong screw length, which can strip the threads or leave the ring loose.

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