Orbit D4RB 4" Drawn Octagon St...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,187.84
Orbit D4RB 4" Drawn Octagon Steel Box, 1-1/2" Deep, Pack of 100

Orbit D4RB 4" Drawn Octagon Steel Box, 1-1/2" Deep, Pack of 100

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Model: D4RB-50

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

$1,187.84
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Orbit D4RB-5075 4" Drawn Octagon Steel Box, 1-1/2" Deep with 1/2" & 3/4" KO

The Orbit D4RB-5075 is a 4" drawn octagon steel box built for standard residential and commercial electrical rough-in work. Formed from steel in a 1-1/2" deep drawn construction, this 4" octagon box is designed to house junction connections, ceiling fixture outlets, and general wiring splices behind wall and ceiling surfaces. The box comes equipped with combination 1/2" and 3/4" knockouts (KO), giving installers the flexibility to bring in conduit or cable connectors in either size without needing a separate reducing washer. As a drawn (one-piece, seamless) steel box rather than a welded or stamped-and-assembled unit, the D4RB-5075 offers a smooth interior profile that helps protect conductor insulation during pulling and termination. This 4" octagon steel box is a staple in the Orbit electrical box lineup and is sized to accept standard octagon box covers, plaster rings, and fixture mounting hardware commonly used across the trade.

Key Features

  • Trade Size: 4" octagon footprint sized for standard junction and fixture outlet applications.
  • Box Depth: 1-1/2" deep drawn body provides adequate wiring space for splices and connectors within the enclosure.
  • Durable Construction: Drawn steel, one-piece body construction for a smooth, seamless interior that helps protect conductors during installation.
  • Combination Knockouts: Built-in 1/2" and 3/4" KO openings allow installers to select the connector size that matches the conduit or cable run without extra reducing washers.
  • Octagon Shape: Standard 4" octagon (4O) form factor compatible with common octagon covers, plaster rings, and ceiling fixture hardware used in residential and light commercial wiring.

Technical Specifications

  • Box Type: 4" Drawn Octagon Steel Box
  • Depth: 1-1/2"
  • Diameter: 4" (4O)
  • Knockouts: 1/2" & 3/4" combination KO
  • Material: Steel, drawn construction

Typical Applications

  • Ceiling Fixture Outlet Boxes
  • Junction and Splice Enclosures
  • Residential Wiring Rough-In
  • Commercial Electrical Construction
  • Conduit and Cable Termination Points

Why Orbit?

Orbit's drawn steel octagon boxes are built with one-piece, seamless construction that gives installers a smooth interior and reliable, consistent sizing across every unit. The 1/2" and 3/4" combination knockouts on the D4RB-5075 give electricians flexibility on the job site, reducing the need for extra fittings and speeding up rough-in work. Choose Orbit for dependable, code-familiar steel box construction on residential and commercial electrical projects.

Manufacturer Resources

Product Specs

Product Size:
1-1/2"
Department:
Electrical
list_batch:
ORB-20260924
Product Material:
Steel
Product Subgroup:
Electrical Boxes
Product Type:
Ceiling Box
Pack size (unit):
100
Product Group:
Boxes & Enclosures

Orbit D4RB-50 – Frequently Asked Questions

1) Which knockout configurations does the Orbit D4RB 4 inch octagon box come in?
Three knockout setups are offered on the Orbit D4RB 4 inch drawn octagon box, all in the 1-1/2 inch depth: 1/2 inch KO only (D4RB-50), 3/4 inch KO only (D4RB-75), and the combination 1/2 inch and 3/4 inch KO (D4RB-50/75). The combination version lets you pick either connector size at the box without stocking reducing washers, which is the one to order if a single rough-in mixes 1/2 inch and 3/4 inch conduit or cable runs.
2) Will standard octagon covers and plaster rings fit the Orbit D4RB box?
Yes. The D4RB is a standard 4 inch octagon (4O) footprint, so it takes the common octagon covers, plaster rings, and ceiling fixture mounting hardware used across residential and light commercial wiring.
3) Should I order the 1/2 inch only version or the combination knockout box?
Order the single-size box when the job is standardized: D4RB-50 if every run into the box is 1/2 inch, D4RB-75 if it is all 3/4 inch. The combination D4RB-50/75 is for mixed work, where one case has to serve both connector sizes at different openings. Function and depth are the same across all three at 1-1/2 inches; the knockouts are the only difference.
4) Is this Orbit octagon box sold individually or in a case?
It ships as a case of 100 boxes. That is a rough-in quantity, so it suits a contractor wiring out a floor of ceiling fixture outlets or a property maintenance shop stocking a shelf, not a one-off replacement.
5) What is the difference between a drawn steel box and a welded or stamped one?
Drawn means the body is formed as one seamless piece rather than stamped panels welded together. The D4RB's drawn body leaves a smooth interior, which helps keep conductor insulation from being nicked while you pull and make up splices. It also keeps sizing consistent case to case, which matters when you are setting a hundred boxes to the same ceiling line.
6) Is a 1-1/2 inch deep octagon box deep enough for a ceiling light splice?
The 1-1/2 inch drawn depth is the standard shallow-to-mid octagon size and gives working room for typical fixture whip splices, wire connectors, and junction makeup behind a ceiling surface. If you are stacking several circuits through one box, check your conductor fill against box volume before committing; for heavy makeup points electricians usually step up to a deeper 4 inch square box instead.
7) Can I use the D4RB octagon box as a junction box and not just a fixture outlet?
Yes. Besides ceiling fixture outlets, the 4 inch drawn octagon is used for junction and splice enclosures and as a conduit or cable termination point in both residential rough-in and commercial electrical work.
How fast can I get the Orbit D4RB-50 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 Orbit D4RB-50 come with a warranty?
Absolutely. The Orbit D4RB-50 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 Orbit D4RB-50?
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
Why buy the Orbit D4RB-50 from ZenSupply?
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