Mulberry 30229 Die-Cast Alumin...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$7.58
Mulberry 30229 Die-Cast Aluminum 1-Gang Box Extension, Powder-Coated

Mulberry 30229 Die-Cast Aluminum 1-Gang Box Extension, Powder-Coated

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Model: 30229

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

$7.58
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Mulberry 30229 Die-Cast Aluminum 1-Gang Box Extension, Powder-Coated

The Mulberry 30229 is a 1-Gang Box Extension crafted from die-cast aluminum with a powder-coated finish, designed to add usable depth to standard single-gang electrical boxes. Measuring 2.75-Inch x 4.5-Inch x 1-Inch, this extension ring mounts between the existing device box and the wiring device to create the additional interior volume electricians need when a box is overcrowded with conductors, connectors, or devices. Because it is sized specifically for 1-gang applications, it drops into standard single-gang rough-ins without requiring a full box replacement. The rugged die-cast aluminum body and protective powder-coated finish make it a dependable choice for both new device box installations and box-depth retrofit work on commercial and residential jobs.

Key Features

  • Overall Dimensions: 2.75-Inch x 4.5-Inch x 1-Inch extension ring sized to fit standard 1-gang device boxes.
  • Durable Construction: Die-cast aluminum body resists corrosion and impact for long-term reliability on the job site.
  • Single-Gang Configuration: Sized for 1-gang electrical boxes, simplifying wiring device and cover plate installation.
  • Added Depth: The 1-Inch extension depth provides additional wiring clearance and box-fill volume behind installed devices.
  • Finish: Powder-coated finish adds an extra layer of durability against wear, scuffing, and handling during installation.
  • Retrofit-Friendly: Mounts to an existing 1-gang box, so crews can add depth without swapping out the entire box assembly.
  • Solid Aluminum Build: Die-cast construction holds its shape and screw threads through repeated device servicing.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Commercial and Residential Electrical Installations
  • Single-Gang Device Box Depth Extensions
  • Renovation and Retrofit Wiring Projects
  • New Construction Electrical Rough-In
  • Wiring Device and Cover Plate Mounting
  • Box-Fill Compliance on Crowded Single-Gang Boxes

Why Mulberry?

Mulberry builds this box extension from die-cast aluminum with a powder-coated finish, giving electrical professionals a rugged, corrosion-resistant component for extending 1-gang box depth. The solid aluminum construction holds up to repeated device installation and servicing, while the powder-coated finish protects against the wear that comes with job-site handling. Together, these qualities support reliable, code-compliant device installations across commercial and residential electrical work, making the Mulberry 30229 a practical fix whenever an existing single-gang box needs more room.

Manufacturer Resources

Mulberry Full Line Catalog

Product Specs

Product Type:
Box Extension
Product Finish:
Powder-Coated
Configuration:
Single Gang
Product Material:
Die-Cast Aluminum
Department:
Electrical
Product Group:
Boxes & Enclosures
Product Subgroup:
Electrical Boxes

Mulberry 30229 – Frequently Asked Questions

1) Will the Mulberry 30229 box extension fit a standard single-gang device box?
Yes. The Mulberry 30229 is sized for 1-gang device boxes and mounts between the existing box and the wiring device, so it drops into a standard single-gang rough-in without replacing the box. Overall size is 2.75 x 4.5 x 1 inches.
2) How much depth does the Mulberry 30229 add to a crowded single-gang box?
One inch. The 30229 extension ring adds 1 inch of depth behind the device, giving extra interior volume and wiring clearance when conductors, connectors and a device have filled the original box.
3) Can I add depth to an existing outlet box without tearing out the box?
That is exactly what the Mulberry 30229 does. It mounts to the existing 1-gang box, so crews gain depth without pulling the box or cutting drywall for a full replacement. Useful on renovation and retrofit wiring where the original box is set in finished construction.
4) Is this box extension metal or plastic?
Die-cast aluminum, with a powder-coated finish. The aluminum body resists corrosion and impact, and the cast threads hold up through repeated device removal and reinstallation, which matters on boxes that get serviced often.
5) Does a box extension help with box fill when I have too many wires in a single-gang box?
Yes, that is the usual reason to specify the 30229. Adding the 1 inch deep ring increases the interior volume of the single-gang box, which is what gets a crowded box back within box-fill limits instead of swapping to a larger box.
6) Will a standard single-gang cover plate still mount after installing this extension?
Yes. Because the 30229 keeps the 1-gang configuration, the wiring device and a standard single-gang cover plate mount to the extension the same way they would to the box itself, just set forward by 1 inch.
7) What is the Mulberry part number for the 1-gang aluminum box extension?
Model and manufacturer part number 30229, from Mulberry. It is the single-gang die-cast aluminum box extension in a powder-coated finish.
8) Is the Mulberry 30229 suitable for commercial work or only residential?
Both. It is used on commercial and residential installations, in new-construction rough-in as well as retrofit and renovation wiring where an existing single-gang box needs more room.
How fast can I get the Mulberry 30229 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 Mulberry 30229 come with a warranty?
Absolutely. The Mulberry 30229 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 Mulberry 30229?
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 Mulberry 30229 from ZenSupply?
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