Allied Moulded 4300-NBK 4-Gang...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$13.46
Allied Moulded 4300-NBK 4-Gang Fiberglass Reinforced Polyester Electrical Switch Box

Allied Moulded 4300-NBK 4-Gang Fiberglass Reinforced Polyester Electrical Switch Box

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Model: 4300-NBK

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

$13.46
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Allied Moulded 4300-NBK 4-Gang Fiberglass Reinforced Polyester Electrical Switch Box

The Allied Moulded 4300-NBK is a 4-Gang Residential/Receptacle electrical switch box built from fiberglass reinforced thermoset polyester as part of the Allied Moulded FiberglassBox™ product line. Measuring 7-1/2-Inch x 3-3/4-Inch x 3-Inch with 60 cubic inches of usable interior volume, this box is engineered to house multiple switches or receptacles in a single, durable enclosure for residential and light commercial wiring applications. The nonmetallic composite construction resists corrosion, rot, and moisture intrusion, making it a long-lasting alternative to traditional metal boxes in a wide range of installation environments.

Key Features

  • 4-Gang Configuration: Provides mounting space for four devices — switches, receptacles, or a combination — within one integrated enclosure.
  • Durable Construction: Molded from fiberglass reinforced thermoset polyester, delivering strength and long-term durability without the corrosion concerns of metallic boxes.
  • Generous Interior Volume: 60-cubic-inch capacity supports proper conductor fill and device clearance per box-fill requirements.
  • Compact Footprint: Overall dimensions of 7-1/2-Inch x 3-3/4-Inch x 3-Inch allow installation in standard wall cavities and framing.
  • Corrosion & Moisture Resistance: Nonmetallic thermoset polyester composition resists rust, rot, and degradation, extending service life versus metal boxes.
  • Residential/Receptacle Rated: Purpose-built for residential switch and receptacle installations, simplifying rough-in wiring for multi-device locations.

Technical Specifications

  • Configuration: 4-Gang
  • Overall Dimensions: 7-1/2-Inch x 3-3/4-Inch x 3-Inch
  • Interior Volume: 60-Cubic-Inch
  • Material: Fiberglass Reinforced Thermoset Polyester
  • Product Line: Allied Moulded FiberglassBox™

Typical Applications

  • Residential Switch and Receptacle Installations
  • Multi-Gang Device Locations in New Construction
  • Renovation and Remodel Wiring Projects
  • Applications Requiring Corrosion-Resistant Enclosures
  • Light Commercial Electrical Rough-In

Why Allied Moulded?

Allied Moulded engineers its FiberglassBox™ line from fiberglass reinforced thermoset polyester to give installers a rugged, corrosion-resistant alternative to conventional metallic boxes. The 4300-NBK combines a spacious 60-cubic-inch interior with a compact 7-1/2-Inch x 3-3/4-Inch x 3-Inch footprint, making it a practical choice for 4-gang residential and receptacle wiring where long-term durability and reliable device support matter.

Manufacturer Resources

Spec Sheet

Product Specs

list_batch:
ALM-20260924
Product Type:
Electrical Switch Box
Configuration:
4-Gang
Series:
FiberglassBox
Department:
Electrical
Product Group:
Boxes & Enclosures
Product Subgroup:
Electrical Boxes
Product Material:
Fiberglass Reinforced Thermoset Polyester

Allied Moulded 4300-NBK – Frequently Asked Questions

1) How many conductors can I put in a 60 cubic inch 4-gang box?
The 4300-NBK gives you 60 cubic inches of usable volume for the whole 4-gang enclosure. Under standard box fill math a 12 AWG conductor counts 2.25 cubic inches and 14 AWG counts 2.00, and each yoke or strap counts double the largest conductor in the box. With four devices installed, that leaves plenty of room for typical multi-gang switch and receptacle runs, but do the fill calculation for your specific conductor count and size before you rough in.
2) Is a fiberglass box better than a metal box for a damp basement or garage?
That is the main reason to reach for this one. The 4300-NBK is molded from fiberglass reinforced thermoset polyester, a nonmetallic composite that will not rust or rot the way a steel box does in humid or corrosive locations. It also needs no bonding jumper to the box itself, since the enclosure is not conductive. Steel is still the choice where you need the box to carry the equipment ground or where a raceway system is being used.
3) Can I gang four switches and receptacles together in one Allied Moulded 4300-NBK?
Yes, that is what it is built for. The 4300-NBK is a one-piece 4-gang enclosure, so four devices, any mix of switches and receptacles, mount in a single molded body instead of ganging four separate single boxes together. A standard 4-gang wall plate covers it.
4) Is the 4300-NBK a new-work box or an old-work remodel box?
The 4300-NBK is a rough-in box for new construction, mounted to framing before drywall, and Allied Moulded also lists it for renovation and remodel wiring. If you are cutting into finished drywall with no accessible stud, you want a dedicated old-work box with wing clamps instead.
5) Do I need a separate ground screw or grounding pigtail with this nonmetallic box?
The box body is fiberglass reinforced thermoset polyester and carries no ground itself, so the equipment grounding conductors get joined and pigtailed to the device green screws. There is no box bonding screw to land on, unlike a steel box.
6) What part number do I order for the Allied Moulded 4-gang fiberglass switch box?
Order it as Allied Moulded 4300-NBK. It is part of the FiberglassBox line, 4-gang, 60 cubic inches, in a 7-1/2 x 3-3/4 x 3 inch body. There is one configuration, so there is no finish or depth choice to specify.
How fast can I get the Allied Moulded 4300-NBK 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 Allied Moulded 4300-NBK come with a warranty?
Absolutely. The Allied Moulded 4300-NBK 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 Allied Moulded 4300-NBK?
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 Allied Moulded 4300-NBK from ZenSupply?
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