Mulberry 30221 Weatherproof Di...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$12.04
Mulberry 30221 Weatherproof Die-Cast Aluminum 1-Gang Outlet Box with Lug, 2.750-In

Mulberry 30221 Weatherproof Die-Cast Aluminum 1-Gang Outlet Box with Lug, 2.750-In

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Model: 30221

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

$12.04
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Mulberry 30221 Weatherproof Die-Cast Aluminum 1-Gang Outlet Box with Lug, 2.750-In

The Mulberry 30221 Weatherproof Die-Cast Aluminum 1-Gang Outlet Box with Lug is a rugged, powder-coated die-cast aluminum enclosure engineered for exposed electrical wiring connections in outdoor and weatherproof applications. Sized at 2.750-In, this single-gang outlet box provides a durable, corrosion-resistant housing for switches, receptacles, and other wiring devices installed where moisture, weather exposure, and physical impact are ongoing concerns. The integrated lug simplifies bonding and grounding connections during rough-in, making the 30221 a practical, field-proven choice for electrical contractors who need a dependable weatherproof box for residential, commercial, or light industrial wiring projects. Its compact 1-gang footprint keeps installations clean while still supporting standard weatherproof cover plates and device combinations commonly specified for exterior electrical work.

Key Features

  • Die-Cast Aluminum Construction: Powder-coated die-cast aluminum body resists corrosion, dents, and impact, holding up to sustained outdoor exposure and rough job-site handling better than lightweight plastic alternatives.
  • 1-Gang Configuration: Single-gang design accommodates one switch, receptacle, or wiring device in a compact, space-efficient footprint suited to exterior walls and structures.
  • Weatherproof Design: Purpose-built as a weatherproof outlet box for use in exposed, outdoor, or damp environments where a standard interior-rated box is not suitable.
  • Grounding Lug: A built-in lug provides a secure, accessible point for bonding and grounding connections, streamlining rough-in and inspection.
  • 2.750-In Sizing: The compact 2.750-In dimension is sized to fit standard weatherproof cover plates and common device combinations.
  • Powder-Coated Finish: The applied powder coating adds an extra layer of protection against rust, corrosion, and surface wear over the life of the installation.
  • Field-Ready Housing: The die-cast aluminum shell provides a rigid mounting platform that helps protect wiring devices and connections from moisture intrusion and physical damage.

Technical Specifications

  • Refer to manufacturer documentation for complete specifications.

Typical Applications

  • Outdoor and Wet-Location Electrical Installations
  • Exterior Switch and Receptacle Mounting
  • Commercial and Residential Weatherproof Wiring
  • Light Industrial Outdoor Electrical Work
  • Renovation and New Construction Projects
  • Grounding and Bonding of Exterior Devices

Why Mulberry?

Mulberry builds electrical boxes and fittings from durable die-cast aluminum with protective powder-coated finishes, giving contractors and electricians a dependable option for demanding outdoor and weatherproof installations. The 30221's rugged construction, compact 1-gang configuration, and integrated grounding lug reflect Mulberry's focus on practical, field-ready hardware built for reliable, code-conscious electrical work.

Manufacturer Resources

Mulberry Full Line Catalog

Product Specs

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

Mulberry 30221 – Frequently Asked Questions

1) Can the Mulberry 30221 outlet box be used outdoors in a wet location?
Yes. The Mulberry 30221 is a weatherproof single-gang box built for exposed exterior wiring, damp and wet-location work where an interior-rated box would not pass. The body is die-cast aluminum with a powder-coated finish, so it holds up to rain, corrosion and job-site knocks on exterior walls, posts and light industrial structures.
2) I need two devices in one weatherproof box outdoors - what should I use instead of the Mulberry 30221?
The Mulberry 30221 is a 1-gang box and holds one switch, receptacle, or wiring device. For a two-device exterior opening, the Thomas & Betts 2IH3-1 Red-Dot conduit outlet box is a 2-gang enclosure with three 1/2-inch hubs for conduit entry. It ships as a pack of 100, so it suits standardizing a multi-unit or multi-opening job rather than a single replacement.
3) What is the difference between the Mulberry 30221 outlet box and the Thomas & Betts 2IH3-1 Red-Dot box?
The Mulberry 30221 is a 1-gang weatherproof die-cast aluminum outlet box with a built-in grounding lug and a powder-coated finish, sized at 2.750-In. The Thomas & Betts 2IH3-1 Red-Dot box is a 2-gang conduit outlet box with three 1/2-inch hubs, supplied in a pack of 100. Choose the 30221 when the opening calls for a single switch or receptacle on an exterior wall; step to the 2IH3-1 when you need two devices in one enclosure and three 1/2-inch conduit entries, or when you are buying in bulk quantity for a repeat rough-in.
4) Can I use a PVC box like the Cantex EZ Box in place of the Mulberry 30221?
They are built for different conditions. The Mulberry 30221 is a die-cast aluminum, powder-coated weatherproof box intended for exposed outdoor and damp-location wiring, with an integrated grounding lug for bonding metallic systems. The Cantex EZ Box is a PVC multi-gang residential outlet box. If the opening is an interior residential wall and you want a nonmetallic box in multiple gang sizes, the EZ Box is the direction; if the device sits outside and takes weather, impact, and a bonding connection, stay with the 30221.
5) Does the Mulberry 30221 have a grounding point built in, or do I have to add one?
A grounding lug is integrated into the box, so you have a dedicated point for your bonding and equipment ground connection at rough-in and it's visible for the inspector. No separate ground screw or clip needs to be added to the enclosure.
6) Aluminum weatherproof box or a PVC box for an exterior receptacle?
Die-cast aluminum like the Mulberry 30221 is the choice where the box takes physical abuse or sun exposure, since the powder-coated metal shell resists dents and impact and gives a rigid mounting platform for the device. A nonmetallic box such as the Cantex EZ Series PVC outlet box is the alternative when you want no metal in the assembly at all, for example in corrosive or masonry/residential rough-in work. Note that the PVC EZ Box is a residential multi-gang box, not a single-gang metal weatherproof enclosure, so it isn't a direct swap for the 30221.
7) Will a standard weatherproof cover plate fit the Mulberry 30221?
Yes. The 30221 is a standard 1-gang weatherproof box and accepts the usual single-gang weatherproof cover plates and device combinations specified for exterior work. The cover is a separate order, as are the device and any conduit fittings.
8) Which box do I pick if I need more than one gang but want a nonmetallic enclosure?
The Mulberry 30221 is single-gang and die-cast aluminum, so it covers neither requirement. The Cantex EZ Box is a PVC multi-gang residential outlet box, which is the nonmetallic multi-gang option. The metallic alternative for multi-gang work is the Thomas & Betts 2IH3-1 Red-Dot 2-gang conduit outlet box with three 1/2-inch hubs.
9) Does the Mulberry 30221 come with conduit hubs like the Red-Dot 2IH3-1?
The Thomas & Betts 2IH3-1 Red-Dot box is specified with three 1/2-inch hubs built into the body. The Mulberry 30221 is described as a 1-gang weatherproof die-cast aluminum box with an integrated grounding lug sized at 2.750-In, and it accepts standard weatherproof cover plates. If the run requires factory 1/2-inch threaded conduit entries at three points, the 2IH3-1 is the box specified that way.
10) What part number do I order for the Mulberry single-gang weatherproof aluminum box?
Order Mulberry 30221. That's the manufacturer part number for the 1-gang weatherproof die-cast aluminum outlet box with lug.
11) Is a powder-coated aluminum box going to corrode on a coastal or high-humidity building?
The body is die-cast aluminum, which does not rust, and the powder coating adds a second barrier against corrosion and surface wear. That combination is what makes it suitable for sustained outdoor exposure rather than an interior-only steel box.
How fast can I get the Mulberry 30221 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 30221 come with a warranty?
Absolutely. The Mulberry 30221 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 30221?
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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