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RACO 128 4 in. Octagon Extension Ring, Drawn Steel, 1-1/2 in. Deep
The RACO 128 is a 4 in. octagon extension ring built from drawn steel to add depth and wiring capacity to an existing octagon box. Measuring 1-1/2 in. deep and featuring four 1/2 in. knockouts, this extension ring is designed for conduit wiring systems and ships with no bracket for direct box-to-box mounting. It is cULus Listed for use in residential and commercial electrical installations where additional box volume or knockout access is needed.
Key Features
- Trade Size: 4 in. octagon configuration matches standard octagon boxes for a clean, code-compliant extension.
- Durable Construction: Drawn steel body provides a strong, seamless extension ring for long-term reliability.
- Depth: 1-1/2 in. deep profile adds usable volume and wire capacity to an installed box.
- Knockouts: Four 1/2 in. knockouts allow for additional conduit entries as the circuit expands.
- Wiring System: Engineered for conduit wiring systems for controlled, code-compliant raceway installations.
- Bracket Type: No bracket, allowing the ring to mount directly to the existing box for a low-profile extension.
Certifications & Compliance
- cULus Listed
Technical Specifications
- Product Type: Steel Boxes and Covers
- Product Depth: 1.5 in
- Drawn or Welded: Drawn
- Bracket Type: No Bracket
- Wiring System: Conduit
- Knockouts: 1/2 in
- Certified Listed: cULus Listed
Typical Applications
- Residential and Commercial Electrical Installations
- Extending Existing Octagon Boxes
- Conduit Wiring Systems
- Ceiling and Wall Box Depth Extensions
- Renovation and New Construction Wiring
Why RACO?
RACO builds this extension ring from drawn steel for a strong, seamless body that stands up to demanding jobsite conditions, and its cULus Listed status confirms it meets recognized safety standards for electrical installations. With a 4 in. octagon profile, 1-1/2 in. depth, and four 1/2 in. knockouts, the RACO 128 gives electricians a dependable, code-compliant way to add capacity to existing octagon box installations.
Manufacturer Resources
Spec Sheet
Product Specs
- list_batch:
- RACO-20260916
- Product Type:
- Steel Boxes and Covers
- Product Depth:
- 1.5 in
- Drawn or Welded:
- Drawn
- Bracket Type:
- No Bracket
- Wiring System:
- Conduit
- Knockouts:
- 1/2 in
- Certified Listed:
- cULus Listed