Orbit 4SDB-MKO-PT 4" Square De...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$4.80
Orbit 4SDB-MKO-PT 4" Square Deep Box, Galvanized Steel

Orbit 4SDB-MKO-PT 4" Square Deep Box, Galvanized Steel

(No reviews yet) Write a Review

Model: 4SDB-MKO-PT

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

$4.80
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Orbit 4SDB-MKO-PT 4" Square Deep Box, Galvanized Steel

The Orbit 4SDB-MKO-PT is a 4-Inch x 4-Inch x 2-1/8-Inch deep square (4S) outlet box built from galvanized sheet steel for long-term corrosion resistance in commercial and industrial electrical rough-in work. Constructed with a welded seam for a rigid, uniform enclosure, this deep box offers 30.3 cubic inches of usable volume, giving installers extra room for device connections, wire splices, and conductor fill on circuits that require additional box capacity. It is equipped with MKO (multiple knockout) openings and PT (pryout) configurations, providing flexible conduit entry points for a variety of raceway sizes without requiring field-drilled holes. As a standard 4-Inch square deep box, it accepts common device rings, covers, and mud rings to adapt the enclosure for switches, receptacles, or junction applications. The welded construction and galvanized steel finish make this box a dependable choice for new construction, renovation, and commercial panel and device wiring where a deep-capacity 4S box is specified.

Key Features

  • Box Size: 4-Inch x 4-Inch x 2-1/8-Inch deep square (4S) configuration for applications requiring extra wiring capacity.
  • Cubic Capacity: 30.3 cubic inches of interior volume to accommodate additional conductors and device connections.
  • Durable Construction: Galvanized sheet steel provides corrosion resistance and long service life in demanding installation environments.
  • Welded Seam: Fully welded body construction delivers a rigid, secure enclosure for consistent field performance.
  • MKO Knockouts: Multiple knockout openings allow flexible conduit entry to match a range of raceway sizes.
  • PT Pryouts: Pryout openings offer additional field-configurable entry points for conduit or cable connections.
  • Deep Box Profile: 2-1/8-Inch depth increases available splice and device space compared to standard-depth 4S boxes.

Technical Specifications

  • Size: 4-Inch x 4-Inch x 2-1/8-Inch
  • Cubic Capacity: 30.3 Cubic Inches
  • Material: Galvanized Sheet Steel
  • Construction: Welded
  • Knockout/Entry Configuration: MKO (Multiple Knockout) & PT (Pryout)

Typical Applications

  • Commercial and Industrial Electrical Rough-In
  • Junction and Device Wiring Enclosures
  • New Construction Projects
  • Electrical Renovation and Retrofit Work
  • Applications Requiring Extra Conductor and Splice Capacity

Why Orbit?

Orbit's 4SDB-MKO-PT deep square box is built from galvanized sheet steel with a fully welded body, delivering the rigidity and corrosion resistance electrical contractors rely on for durable, code-compliant installations. The combination of MKO knockouts, PT pryouts, and deep 30.3 cubic-inch capacity gives installers the flexibility and room needed to complete demanding wiring jobs efficiently and reliably.

Manufacturer Resources

Product Specs

list_batch:
ORB-20260924
Product Type:
Outlet Box
Configuration:
Welded
Department:
Electrical
Product Subgroup:
Electrical Boxes
Product Material:
Galvanized Steel
Product Size:
2-1/8"
Product Group:
Boxes & Enclosures

Orbit 4SDB-MKO-PT – Frequently Asked Questions

1) What does MKO and PT mean on an Orbit 4 inch square box?
MKO stands for multiple knockout and PT for pryout. The 4SDB-MKO-PT has both: the multiple knockouts give you concentric openings so one location serves more than one trade size of conduit, and the pryouts are tabbed openings you pop out with a screwdriver for cable or connector entry. Between the two you set your raceway entries in the field without drilling the box.
2) Will a standard mud ring or device ring fit this Orbit 4SDB box?
Yes. It is a standard 4 inch square (4S) box, so it takes the common 4S device rings, mud rings, and flat covers for single-gang or two-gang switch and receptacle trim, or a blank cover for a junction box. Ring depth is chosen to match your finished wall thickness; the ring is a separate item and is not included with the box.
3) Should I use a 2-1/8 inch deep 4 square box or the standard 1-1/2 inch one?
Go deep when conductor count or splices drive it. The 2-1/8 inch deep Orbit 4SDB gives 30.3 cubic inches, versus roughly 21 cubic inches for a standard 1-1/2 inch deep 4S box, so it is the one to use where several circuits pass through, you are landing a device plus pigtails, or a multi-wire home run splices in the box. A standard depth box is fine for a simple single device feed and sits better in a shallow stud cavity or a furred-out wall where 2-1/8 inches plus a ring will not fit.
4) Is a galvanized steel welded box OK for a damp or industrial location?
The 4SDB-MKO-PT is galvanized sheet steel with a fully welded body, which is what contractors use for commercial and industrial rough-in where corrosion resistance and a rigid enclosure matter. Welded rather than crimped means the seams will not open up when you are pulling conductors. It is not a gasketed weatherproof enclosure though, so for wet locations exposed to rain you want a listed weatherproof box and cover instead.
5) Does this Orbit box come with a cover or mounting bracket?
The 4SDB-MKO-PT is the box body only. Covers, mud rings, device rings, conduit connectors, and any bracket or bar hanger you need for stud mounting are ordered separately, so plan the trim and fasteners into the same order to finish the rough-in.
6) Can I use this as a junction box for splices only, with no device?
Yes, that is one of its common uses. With 30.3 cubic inches and pryout and knockout entries on multiple faces, the 4SDB-MKO-PT works as a straight junction or pull box for splices; cap it with a flat 4S blank cover and keep it accessible per code. Bear in mind a blank-covered junction box still has to remain reachable, so do not bury it behind finished drywall.
7) What is the exact part number and box size for the Orbit 4 inch square deep box?
Orbit part number 4SDB-MKO-PT. It measures 4 inches by 4 inches by 2-1/8 inches deep, galvanized steel, welded, with MKO knockouts and PT pryouts.
How fast can I get the Orbit 4SDB-MKO-PT 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-MKO-PT come with a warranty?
Absolutely. The Orbit 4SDB-MKO-PT 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-MKO-PT?
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 4SDB-MKO-PT from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!