RACO 8257 4-11/16 in. Welded S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$3.66
RACO 8257 4-11/16 in. Welded Square Steel Box, Raised Ground

RACO 8257 4-11/16 in. Welded Square Steel Box, Raised Ground

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Model: 8257

In Stock (leaves warehouse same day if ordered before 3pm ET)

$3.66
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RACO 8257 4-11/16 in. Welded Square Steel Box, Raised Ground

The RACO 8257 is a 4-11/16 in. welded square steel box built for commercial and industrial conduit wiring systems. This box measures 2-1/8 in. deep and is fitted with one 1/2 in. KO plus fifteen 1/2 - 3/4 in. combination TKOs, giving installers multiple conduit entry options on a single enclosure. A raised ground feature is integrated into the box for reliable equipment grounding conductor termination, and the box carries a UL Listing for use in code-compliant electrical installations.

Key Features

  • Trade Size: 4-11/16 in. square box footprint for standard conduit box layouts.
  • Box Depth: 2-1/8 in. deep body provides ample interior wiring space for splices and terminations.
  • Durable Construction: Welded steel square box construction for rugged strength in commercial and industrial settings.
  • Knockout Configuration: One 1/2 in. KO plus fifteen 1/2 - 3/4 in. combination TKOs for flexible conduit entry from multiple directions.
  • Wiring System: Designed for conduit wiring systems.
  • Bracket Type: No Bracket, suited for direct conduit-supported mounting.
  • Raised Ground: Integrated raised ground feature for secure grounding conductor attachment.

Certifications & Compliance

  • UL Listed

Technical Specifications

  • Product Type: Steel Box
  • Product Size: 4-11/16 in
  • Product Depth: 2.125 in
  • Product Shape: Square
  • Drawn or Welded: Welded
  • Bracket Type: No Bracket
  • Wiring System: Conduit
  • Knockouts: 1/2 in;1/2 - 3/4 in Combination (TKO)
  • Certified Listed: UL Listed

Typical Applications

  • Commercial and Industrial Conduit Wiring Installations
  • Junction and Pull Box Applications
  • New Construction Electrical Rough-In
  • Grounding Conductor Termination Points
  • Panel and Equipment Wiring Enclosures

Why RACO?

RACO builds this 8257 square box with welded steel construction for lasting strength on the job site, and its raised ground feature supports proper grounding conductor termination for code-compliant work. With a UL Listing and a knockout layout that includes one 1/2 in. KO and fifteen 1/2 - 3/4 in. combination TKOs, this box gives electrical contractors a dependable, versatile enclosure for conduit-based wiring systems in commercial and industrial applications.

Manufacturer Resources

Spec Sheet

Product Specs

list_batch:
RACO-20260916
Product Type:
Outlet Box
Product Size:
4-11/16 in
Product Depth:
2.125 in
Product Shape:
Square
Drawn or Welded:
Welded
Bracket Type:
No Bracket
Wiring System:
Conduit
Knockouts:
1/2 in;1/2 - 3/4 in Combination (TKO)
Certified Listed:
UL Listed
Department:
Electrical
Product Subgroup:
Electrical Boxes
Product Group:
Boxes & Enclosures

RACO 8257 – Frequently Asked Questions

1) Will a RACO 8257 square box work for a conduit run with 3/4 in. EMT coming in?
Yes. The 8257 has fifteen 1/2 to 3/4 in. combination TKOs, so you can open them to 3/4 in. for EMT connectors, plus one fixed 1/2 in. knockout. That mix lets you bring conduit in from multiple sides of the box on the same enclosure.
2) How deep is the RACO 8257 box and is it big enough for several splices?
It's a 4-11/16 in. square box with a 2-1/8 in. deep body, which is the deepest standard depth in the 4-11/16 series and gives you room for multiple splices or device terminations. Box fill still has to be calculated for your conductor count and sizes.
3) Does the RACO 8257 come with a mounting bracket, or how do I support it?
No bracket on the 8257. It's designed to be supported by the conduit entering it, or fastened directly to a structural surface through the box back. If you need a box that mounts to a stud face at a set depth, you want a bracketed version instead.
4) Is the RACO 8257 suitable for NM cable (Romex) residential work?
No. The 8257 is built for conduit wiring systems, with knockouts for conduit connectors rather than cable clamps. For residential NM cable work a nonmetallic box like the Cantex EZ Series multi-gang residential outlet box is the right family.
5) Can I use the RACO 8257 outdoors or in a wet location?
No. It's a welded steel box with open knockouts, intended for commercial and industrial conduit work indoors. For a weatherproof exterior device box, use something like the Mulberry Royal Mountie die-cast aluminum 1-gang weatherproof box, and for hazardous locations an Appleton GRJ Series explosionproof malleable iron conduit outlet box.
6) What should I use instead of the RACO 8257 on an outdoor wet-location device?
The 8257 is a knockout-style welded steel box intended for interior conduit runs. For an exposed outdoor device, use a weatherproof box such as the Mulberry Royal Mountie die-cast aluminum 1-gang weatherproof outlet box, or the Thomas and Betts 2IH3-1 Red-Dot two-gang conduit outlet box with three 1/2 in. threaded hubs. Threaded hubs and a gasketed cover do the sealing that a knockout box cannot.
7) Does the RACO 8257 have a ground provision built in?
Yes, a raised ground feature is integrated into the box for terminating the equipment grounding conductor, so you don't need to add a separate ground clip.
8) Is the RACO 8257 UL Listed for code-compliant commercial installs?
UL Listed, yes. That covers its use as an outlet, junction, or pull box in conduit systems on commercial and industrial jobs where the inspector wants listed enclosures.
9) Welded versus drawn steel box, which should I spec for a junction box?
The 8257 is welded, meaning the body is formed from sheet panels joined at the corners. Welded 4-11/16 in. boxes are made in deeper bodies like this 2-1/8 in. one, which is why they get used as junction and pull boxes with heavy conduit entry. Drawn boxes are seamless single-piece bodies and are typically shallower.
10) Is there a nonmetallic alternative to the RACO 8257 for residential rough-in?
Yes, but it is a different wiring method. The 8257 is a welded steel box for conduit systems. For residential cable rough-in, the Cantex EZ Series PVC multi-gang residential outlet box is the nonmetallic option. Steel conduit boxes bond the raceway for grounding; a PVC box carries no bonding path, so the equipment ground must be carried in the cable and landed on the device.
11) Is a round conduit outlet box like the Appleton GRT75 a substitute for the RACO 8257?
Not for the same job. The Appleton GRT75 is a malleable iron round conduit outlet box, typically used as a small pull or device point on threaded rigid conduit. The RACO 8257 is a 4-11/16 in. square box, 2-1/8 in. deep, with one 1/2 in. knockout plus fifteen 1/2 to 3/4 in. combination TKOs, giving far more interior wiring volume and many more entry points for junction and pull box work.
12) Can I use the RACO 8257 for an electric range or dryer outlet?
The 8257 is a general-purpose welded steel square box for conduit systems and is not configured as a range or dryer outlet assembly. For that application the Pass and Seymour P242RRD thermoplastic range and dryer box is the purpose-built part. Choose the 8257 when you need a junction, pull, or device enclosure on a conduit run instead.
13) What's the part number to order this RACO 4-11/16 square box?
RACO 8257 is the manufacturer part number for the 4-11/16 in. welded square steel box, 2-1/8 in. deep with raised ground.
How fast can I get the RACO 8257 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
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 8257 come with a warranty?
Absolutely. The RACO 8257 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the RACO 8257?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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