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RACO 202 4 in. Square Steel Extension Ring, 1-1/2 in. Deep, Eight 3/4 in. KO's
The RACO 202 is a 4 in. square extension ring, drawn from steel, engineered to extend the depth of an existing 4 in. square outlet, junction, or device box. This extension ring measures 1-1/2 in. deep and features eight 3/4 in. knockouts (KO's) that provide additional conduit entry points for expanding wiring capacity. With no bracket, the RACO 202 mounts directly to an existing box and is UL Listed for reliable, code-compliant performance on commercial, industrial, and residential conduit wiring projects.
Key Features
- Trade Size: 4 in. square extension ring sized to match standard 4 in. square outlet and junction boxes for seamless alignment.
- Durable Construction: Drawn steel body construction provides strength, dent resistance, and long-lasting durability in demanding job-site conditions.
- Extension Depth: 1-1/2 in. deep profile adds usable interior volume and wiring space to existing box installations without replacing the entire box.
- Knockouts: Eight 3/4 in. knockouts (KO's) provide multiple conduit entry points for flexible routing of conduit runs.
- Bracket Type: No Bracket design allows the ring to mount directly box-to-box for straightforward stacking and depth extension.
- Wiring System: Compatible with conduit wiring systems, making it well suited for conduit-fed commercial and industrial installations.
Certifications & Compliance
- UL Listed
Technical Specifications
- Product Type: Steel Box
- Product Size: 4 in
- Product Depth: 1.5 in
- Product Shape: Square
- Drawn or Welded: Drawn
- Bracket Type: No Bracket
- Wiring System: Conduit
- Knockouts: 3/4 in
- Certified Listed: UL Listed
Typical Applications
- Extending the Depth of Existing 4 in. Square Junction or Device Boxes
- Commercial and Industrial Conduit Wiring Systems
- New Construction Electrical Rough-In
- Renovation and Retrofit Box Depth Extensions
Why RACO?
RACO is a recognized manufacturer of steel electrical boxes, rings, and covers engineered for demanding conduit installations. The RACO 202's drawn steel construction, eight 3/4 in. knockouts, and UL Listing combine to deliver a durable, code-compliant solution for electricians who need to extend the depth of existing 4 in. square boxes on commercial, industrial, and residential projects.
Manufacturer Resources
Spec Sheet
Product Specs
- list_batch:
- RACO-20260916
- Product Type:
- Box Extension Ring
- Product Size:
- 4 in
- Product Depth:
- 1.5 in
- Product Shape:
- Square
- Drawn or Welded:
- Drawn
- Bracket Type:
- No Bracket
- Wiring System:
- Conduit
- Knockouts:
- 3/4 in
- Certified Listed:
- UL Listed
- Department:
- Electrical
- Product Subgroup:
- Electrical Boxes
- Product Group:
- Boxes & Enclosures
RACO RACO202 – Frequently Asked Questions
1) How much depth does the RACO 202 add to an existing box?
It adds 1-1/2 in. of depth. That extra interior volume is what gets you back inside box fill limits when a device or wire count has outgrown the original 4 in. square box, without pulling the box out of the wall.
2) I need to bring a device forward in a single-gang switch box - will the RACO 202 work?
No. The RACO 202 is sized at 4 in. square to match 4 in. square outlet and junction boxes, so it will not seat on a 1-gang switch box. For that opening, the Thomas & Betts SBEX is an adjustable 1-gang switch box extension in pre-galvanized steel with 3.5 cu. in. of added volume.
3) What is the difference between the RACO 202 extension ring and the Steel City SBEX switch box extension?
They extend different box types. The RACO 202 is a 4 in. square extension ring, 1-1/2 in. deep, with eight 3/4 in. knockouts, drawn steel, built to add depth to an existing 4 in. square outlet or junction box in conduit wiring. The Thomas & Betts SBEX is an adjustable 1-gang switch box extension of 3.5 cu. in. in pre-galvanized steel, sized for a single-gang device box rather than a 4 in. square. If the box in the wall is a 4 in. square, the 202 is the matching footprint; if it is a 1-gang switch box, the SBEX is the one that lands on it.
4) Can I use a 4 in. square extension ring on a nonmetallic cable installation?
The RACO 202 is specified for conduit wiring systems. Its knockouts are plain 3/4 in. openings for conduit fittings, so on an NM cable job you would need to add listed cable connectors or clamps appropriate to those openings rather than treating the ring as cable-ready.
5) Do I still need a cover or device ring after installing the RACO 202?
Yes. The 202 is a depth extension only, not a cover. Once stacked on the existing 4 in. square box you still finish with a flat blank cover or a 4 in. square device ring, depending on whether the box is a junction point or holds a wiring device.
6) Is the RACO 202 drawn or welded steel, and does that matter on a job site?
Drawn steel, formed from a single piece rather than welded up from sections. Practically, that means no seams to split and better dent resistance when the ring takes a hit during rough-in.
7) Where can I get the manufacturer spec sheet for the RACO 202?
RACO publishes a spec sheet for model 202 at hubbellcdn.com/specsheet/RACO-202-SPEC-EN.pdf, which is the document to attach when a submittal package calls for the box extension cut sheet.
8) Is the RACO 202 steel the same as a pre-galvanized extension?
Not the same construction call-out. The RACO 202 is specified as drawn steel and is UL Listed. The Thomas & Betts SBEX is described as pre-galvanized steel. If a drawing calls out a particular finish or forming method for the ring, confirm against the RACO 202 spec sheet before ordering.
How fast can I get the RACO RACO202 delivered?
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reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the RACO RACO202 come with a warranty?
Absolutely. The RACO RACO202 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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