Orbit 4SDB Series Square Deep ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$3.76
Orbit 4SDB Series Square Deep Box, Welded Steel, 1" KO

Orbit 4SDB Series Square Deep Box, Welded Steel, 1" KO

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Model: 4SDB-75

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

$3.76
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Orbit 4SDB Series Square Deep Box, Welded Steel, 1" KO

The Orbit 4SDB Series Square Deep Box is a 4" square, 2-1/8" deep welded steel electrical box designed to provide extra interior volume for junction, outlet, and switch installations where standard-depth boxes fall short on fill capacity. Available in the 4SDB-75 and 4SDB-100 models, the 4SDB Series is built with a fully welded body for structural integrity and long-term durability, and arrives pre-punched with a 1" knockout (KO) to simplify conduit entry and reduce field labor. This deep box family is engineered to meet the demands of commercial, industrial, and residential electrical rough-in work where a dependable, code-friendly enclosure is required for device and wire management.

Key Features

  • Box Size: 4" square footprint for standard device and junction box applications, shared across the 4SDB-75 and 4SDB-100 models.
  • Deep Profile: 2-1/8" depth provides additional interior volume for wire fill and device clearance compared to shallow boxes.
  • Welded Construction: Fully welded steel body for added rigidity and strength versus seamed or folded boxes.
  • Knockout: Includes a 1" KO for streamlined conduit entry during installation.
  • Series Consistency: Part of the Orbit 4SDB Series, engineered for compatibility with standard 4" square box covers, rings, and accessories.
  • Model Range: Choose from the 4SDB-75 and 4SDB-100 model options within the series to match project requirements.

Technical Specifications

  • Box Shape: 4" Square
  • Depth: 2-1/8"
  • Construction: Welded
  • Knockout Size: 1"
  • Series: 4SDB
  • Available Models: 4SDB-75, 4SDB-100

Typical Applications

  • Commercial and Industrial Electrical Rough-In
  • Junction and Pull Box Installations
  • Switch and Outlet Device Mounting
  • Conduit Wiring Systems Requiring Extra Box Depth
  • New Construction and Renovation Projects

Why Orbit?

Orbit's 4SDB Series deep box is built with a welded steel body to deliver a sturdy, dependable enclosure for demanding electrical installations across both the 4SDB-75 and 4SDB-100 models. The added 2-1/8" depth and pre-installed 1" KO make this box family a practical, labor-saving choice for electricians who need extra room and simplified conduit entry without sacrificing durability. Whether specifying the 4SDB-75 or 4SDB-100, contractors get the same welded steel construction and 4" square footprint that has made the 4SDB Series a dependable choice for rough-in electrical work.

Manufacturer Resources

Product Specs

list_batch:
ORB-20260924
Product Type:
Outlet Box
Configuration:
4" Square
Product Finish:
Welded
Series:
4SDB
Department:
Electrical
Product Subgroup:
Electrical Boxes
Product Material:
Steel
Product Size:
1"
Product Group:
Boxes & Enclosures

Orbit 4SDB-75 – Frequently Asked Questions

1) What knockout sizes does the Orbit 4SDB square deep box come in?
Two knockout options are offered: the 4SDB-100 with 1 inch knockouts and the 4SDB-75 with 3/4 inch knockouts. Pick the one that matches your conduit run so you are not reaming or bushing down a hole in the field. Both are the same 4 inch square, 2-1/8 inch deep welded steel body.
2) Will standard 4 inch square covers and plaster rings fit the Orbit 4SDB box?
Yes. The 4SDB has a 4 inch square footprint, so it takes standard 4 inch square covers, mud rings, and accessories. That also means it standardizes with the rest of the 4 square boxes already on a job, which is what matters if you are stocking one ring type across a building.
3) Do I need a deep 4 square box or will a standard depth one work?
Depth is a wire fill question. The 4SDB is 2-1/8 inches deep, which gives more interior volume than a shallow 4 square, so it is the one to use when you are pulling several conduits into a junction point or stuffing a device plus pigtails behind a ring. For a single switch or receptacle on a short run, a shallower box is usually enough. If fill is tight or you are mounting a deeper device, go deep.
4) Which Orbit part number do I order for 3/4 inch EMT?
Order the 4SDB-75, the 3/4 inch knockout version of the 4 inch square deep box. The 4SDB-100 is the 1 inch knockout model. Everything else, the welded steel body and 2-1/8 inch depth, is the same between them.
5) What should I use instead of an Orbit 4SDB deep box in a wet or washdown location?
The Orbit 4SDB is a welded steel 4-inch square box, 2-1/8 inches deep, intended for rough-in junction, switch, and outlet work. For a washdown or exposed wet area, the Rittal 80181 JB Series hinged-cover junction box is rated IP66/NEMA 4X, so it is built around a sealed, gasketed enclosure rather than an open device box that relies on a separate cover and ring.
6) Is there a non-metallic alternative to the Orbit 4SDB steel box?
Yes. The Orbit 4SDB body is welded steel, which suits conduit rough-in and raceway grounding. If the job calls for a non-metallic enclosure instead, the Cantex E983G is a non-metallic PVC junction box family, and the Carlon E987R is a polycarbonate screw-cover box in a 6 inch by 6 inch by 4 inch size. Both are larger-volume or plastic-bodied designs rather than a 4 inch square device box.
7) Is the Cantex 5133690 junction box a direct substitute for the Orbit 4SDB?
No. The Cantex 5133690 is a 4-1/8 inch junction box supplied with a cover and a 1/2 inch knockout. The Orbit 4SDB is a 4 inch square welded steel box offered with a 1 inch knockout as the 4SDB-100 and a 3/4 inch knockout as the 4SDB-75, and the cover or device ring is ordered separately. If the conduit run is 3/4 inch or 1 inch, the knockout sizes do not line up.
8) Is the Orbit 4SDB a welded box or a seamed one?
Fully welded steel body, not folded or seamed. That is the difference buyers care about on rough-in: a welded box holds its shape when it gets bumped during framing or when conduit is torqued into a knockout.
9) What is the difference between a steel 4 square box and a non-metallic PVC junction box?
The Orbit 4SDB is welded steel, which is what you want with EMT or rigid conduit runs and where the box needs mechanical strength during framing. Non-metallic alternatives such as the Cantex E983G PVC junction box family or the Carlon E987R polycarbonate screw-cover box (6 x 6 x 4 inches) are the choice where corrosion resistance or a non-conductive enclosure is the priority. Steel also needs bonding continuity handled through the raceway; PVC does not conduct.
10) Does the Orbit 4SDB box come with a cover?
The 4SDB ships as the box itself, pre-punched with knockouts. Covers, mud rings, and mounting accessories are ordered separately, and because the footprint is a standard 4 inch square they take common 4 square cover plates. If you want a junction box that arrives with its cover, the Cantex 5133690 is a 4-1/8 inch junction box supplied with a cover and a 1/2 inch knockout.
11) I need more interior volume than the Orbit 4SDB offers for a pull point - what else works?
The Orbit 4SDB is a 4 inch square box at 2-1/8 inches deep. Where a pull or splice point needs substantially more room, the Carlon E987R polycarbonate screw-cover junction box measures 6 inches by 6 inches by 4 inches, and the Rittal 80181 JB Series box uses a hinged cover for repeated access. Neither accepts 4 inch square device rings the way the 4SDB does.
12) Which junction box should I pick if I want the cover included?
The Cantex 5133690 is a 4-1/8 inch junction box that comes with its cover and a 1/2 inch knockout. The Orbit 4SDB-75 and 4SDB-100 ship as welded steel 4 inch square deep boxes sized for standard 4 inch square covers, rings, and accessories, which are specified to match the device being installed.
How fast can I get the Orbit 4SDB-75 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 4SDB-75 come with a warranty?
Absolutely. The Orbit 4SDB-75 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 4SDB-75?
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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