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Square galvanized zinc plaster ring with tapped ears, single gang, raised half inch

Hubbell Incorporated

Hubbell Incorporated RACO 837 Plaster Ring 1 Gang Galvanized Zinc Square Box Type

SKU CH-J1W1-2TRYM

Single-gang plaster ring with 3.50 cubic-inch capacity, keyed for plaster and raised 1/2 inch

  • TypeElectrical Boxes & Covers
  • Single-gang plaster ring simplifies wall finishing
  • Keyed design holds plaster securely in place
  • 50 cubic inch capacity fits standard wiring needs
  • Center blanked with tapped ears for easy mounting
  • Galvanized zinc construction resists corrosion over time

Single-gang plaster ring for square boxes

The RACO 837 is a single-gang plaster ring made from galvanized zinc. It fits standard square electrical boxes and provides a 1/2 inch raised mounting surface. The ring is keyed for plaster and features a center-blanked design with tapped ears for secure device installation.

Tapped ears and center-blanked layout

Tapped ears allow direct mounting of switches or receptacles without additional hardware. The center-blanked configuration keeps the opening clear for plaster work while maintaining structural rigidity. Galvanized zinc construction resists corrosion in damp or humid environments.

3.50 cubic inches of wiring capacity

The ring adds 3.50 cubic inches of internal volume to the host box, accommodating multiple conductors and splices. It suits typical residential lighting or receptacle circuits where moderate fill is required. Installations with heavy conductor counts or large devices may exceed the available space.

Highlights

  • Single-gang plaster ring simplifies wall finishing
  • Keyed design holds plaster securely in place
  • 50 cubic inch capacity fits standard wiring needs
  • Center blanked with tapped ears for easy mounting
  • Galvanized zinc construction resists corrosion over time

Specifications

BrandRACO
TypeElectrical Boxes & Covers

Questions about this item

Will the 1/2 inch raised plaster ring need replacement if the wall finish changes?

The ring is galvanized zinc and keyed for plaster; it stays in place unless the box is removed or the opening size changes.

What limits how many wires fit inside the 3.50 cubic inch capacity ring?

The 3.50 cubic inch volume sets the fill limit; exceeding it violates code and crowds connections.

Does the galvanized zinc ring get hot when circuits run all day?

The ring is a passive metal cover; it does not carry current, so it does not generate heat during continuous use.

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