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RACO 8231 4 in. Welded Square Steel Box, 2-1/8 in. Deep
The RACO 8231 is a 4 in. welded square steel box, 2-1/8 in. deep, engineered for conduit wiring systems in commercial and industrial applications. This UL Listed box features one 1/2 in. and twelve 3/4 in. knockouts, providing flexible conduit entry options for a variety of installation needs. With durable welded steel construction and a no-bracket design, the RACO 8231 delivers a dependable enclosure for splices, devices, and conduit terminations.
Key Features
- Trade Size: 4 in. square box footprint suited for standard conduit box installations.
- Durable Construction: Welded steel body offers strength and long-term durability for demanding electrical installations.
- Box Depth: 2-1/8 in. deep interior provides ample room for wiring, splices, and devices.
- Knockouts: One 1/2 in. and twelve 3/4 in. knockouts allow flexible conduit entry from multiple directions.
- Bracket Type: No bracket design supports direct surface or ceiling mounting configurations.
- Wiring System: Designed for use with conduit wiring systems in commercial and industrial construction.
- Shape: Square profile, a standard form factor for junction and device box installations.
Certifications & Compliance
- UL Listed
Technical Specifications
- Product Type: Steel Box
- Product Size: 4 in
- Product Depth: 2.125 in
- Product Shape: Square
- Drawn or Welded: Welded
- Bracket Type: No Bracket
- Wiring System: Conduit
- Knockouts: 1/2 in;3/4 in
- Certified Listed: UL Listed
Typical Applications
- Commercial and Industrial Electrical Installations
- Conduit and Raceway Systems
- Junction and Outlet Box Applications
- New Construction and Renovation Wiring
Why RACO?
RACO builds the 8231 square box with welded steel construction for a rugged, long-lasting enclosure that stands up to demanding job-site conditions. Backed by UL Listing, this box delivers the code-compliant performance electrical professionals rely on for conduit wiring installations. With one 1/2 in. and twelve 3/4 in. knockouts plus a no-bracket design, it offers straightforward, dependable installation flexibility.
Manufacturer Resources
Spec Sheet
Product Specs
- list_batch:
- RACO-20260916
- Product Type:
- Outlet Box
- Product Size:
- 4 in
- Product Depth:
- 2.125 in
- Product Shape:
- Square
- Drawn or Welded:
- Welded
- Bracket Type:
- No Bracket
- Wiring System:
- Conduit
- Knockouts:
- 1/2 in;3/4 in
- Certified Listed:
- UL Listed
- Department:
- Electrical
- Product Subgroup:
- Electrical Boxes
- Product Group:
- Boxes & Enclosures
RACO RACO8231 – Frequently Asked Questions
1) Will the RACO 8231 take 3/4 in. EMT or rigid conduit, and how many runs can I bring in?
The 8231 square box has twelve 3/4 in. knockouts plus one 1/2 in. knockout, so you can bring 3/4 in. conduit in from multiple sides and the back. It's built for conduit wiring systems, not cable-clamp NM work.
2) Does the RACO 8231 come with a mounting bracket or do I mount it directly to the surface?
No bracket on this one. The 8231 is a bracketless 4 in. square box, so it fastens directly to a surface, a ceiling, or strut using the mounting holes in the box. If you need a box that nails to a stud face at a set setback, order a bracketed version instead.
3) Can the RACO 8231 be used outdoors on an exterior wall?
The RACO 8231 is a welded steel square box with knockout conduit entries, which suits dry interior conduit runs. Where the box sits on a wet or exposed exterior surface, buyers typically specify a weatherproof box such as the Mulberry Royal Mountie 1-gang die-cast aluminum weatherproof outlet box, or a Thomas and Betts Red-Dot 2IH3-1 2-gang conduit box with three 1/2 in. threaded hubs instead of open knockouts.
4) What's the difference between a welded and a drawn 4 in. square steel box?
The 8231 is welded. Welded steel boxes are made from formed sheet joined at the corners, which is how manufacturers get the deeper 2-1/8 in. body and the higher knockout count (twelve 3/4 in. plus one 1/2 in.) that you can't get in a shallow drawn box. Drawn boxes are one-piece and seamless but shallower with fewer entries.
5) Do I need to order a cover separately for the RACO 8231?
Yes. The 8231 is the box only, a 4 in. square welded steel body 2-1/8 in. deep. You add the cover to suit the job: a flat blank cover for a junction point, or a raised device cover sized to your switch, receptacle, or plaster depth.
6) What is the alternative to the RACO 8231 for residential nonmetallic cable work?
The RACO 8231 is built for conduit wiring systems in steel. For residential rough-in with nonmetallic cable, the Cantex EZ Box series multi-gang PVC residential outlet box is the nonmetallic counterpart. Note the 8231 is a 4 in. square box 2-1/8 in. deep with no bracket, while the Cantex EZ is a multi-gang PVC device box.
7) Difference between the RACO 8231 knockout box and a threaded-hub box like the Red-Dot 2IH3-1?
The RACO 8231 comes with one 1/2 in. and twelve 3/4 in. knockouts, so you open only the entries you need and use connectors suited to the raceway. The Thomas and Betts 2IH3-1 Red-Dot box is a 2-gang conduit box with three fixed 1/2 in. hubs already threaded, and is sold in a pack of 100.
How fast can I get the RACO RACO8231 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the RACO RACO8231 come with a warranty?
Absolutely. The RACO RACO8231 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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