Carlon High-Heat Adjustable Ou...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$157.14
Carlon High-Heat Adjustable Outlet Box - Heat-Resistant Electrical Box for Retrofit Applications

Carlon High-Heat Adjustable Outlet Box - Polyester Fire-Rated Electrical Box for Retrofit Applications

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Model: HH239ADJ

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

$157.14
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Carlon High-Heat Adjustable Outlet Box - Polyester Fire-Rated Electrical Box for Retrofit Applications

Professional Fire-Rated Electrical Solution for Retrofit Construction

The Carlon High-Heat Adjustable Outlet Box delivers reliable electrical installation performance specifically engineered for fire-rated wall applications in residential and light commercial construction. This polyester construction outlet box provides heat-resistant performance with adjustable design for versatile retrofit applications, meeting UL standards for professional electrical installations.

Professional Features & Benefits

  • Fire-Rated Wall Design: Specifically engineered for use in fire-rated walls, ensuring code compliance and enhanced safety in residential and light commercial applications.
  • Heat-Resistant Polyester Construction: Durable polyester material provides superior heat resistance and long-term reliability in high-temperature electrical environments.
  • Adjustable Retrofit Design: Engineered for retrofit applications with adjustable features that accommodate various wall thicknesses and installation requirements.
  • UL Listed Standards: Meets UL E11461 and UL R9140 standards, ensuring professional-grade safety and performance for electrical installations.
  • Zero Knockout Design: Clean construction without pre-punched knockouts allows for customized conduit connections based on specific installation needs.
  • Professional Blue Identification: Distinctive blue color provides easy identification during installation and inspection processes.

Technical Specifications

  • Brand Label: Carlon / Nutek
  • Country Of Origin: United States (US)
  • Department: Electrical
  • Effective Date: 20190205
  • Idea Granular Category Code Igcc : 4436 >> Non-Metallic Outlet Boxes
  • Number Of Knockouts: 0
  • Product Color: Blue
  • Product Material: Polyester
  • Special Functions: Specifically designed for use in fire-rated walls in residential and lightcommercial construction
  • Standards: UL E11461, UL R9140

Professional Applications

  • Residential Fire-Rated Wall Installations
  • Light Commercial Electrical Retrofit Projects
  • Multi-Unit Residential Properties
  • Professional Office Buildings
  • Retail and Commercial Establishments
  • Educational and Institutional Facilities
  • Healthcare and Emergency Services Buildings

Why Choose Carlon Quality?

Carlon delivers professional-grade electrical solutions with UL E11461 and UL R9140 listings, ensuring reliable performance and code compliance. The heat-resistant polyester construction and fire-rated wall compatibility provide long-term durability for demanding electrical applications in residential and light commercial environments.

Manufacturer Resources

Product Specs

Brand Label:
Carlon / Nutek
Country Of Origin:
United States (US)
Department:
Electrical
Effective Date:
20190205
Idea Granular Category Code Igcc :
4436 >> Non-Metallic Outlet Boxes
Number Of Knockouts:
0
Product Color:
Blue
Product Material:
Polyester
Special Functions:
Specifically designed for use in fire-rated walls in residential and lightcommercial construction
Standards:
UL E11461, UL R9140
Product Group:
Old Work/New Work Boxes
Product Type:
Outlet Boxes

Carlon HH239ADJ – Frequently Asked Questions

1) Can I use a plastic outlet box in a fire-rated wall assembly?
The Carlon High-Heat adjustable box is the non-metallic box made for exactly that. It's built specifically for use in fire-rated walls in residential and light commercial construction, which is the reason it exists as a separate part from a standard blue PVC old-work box. A general-purpose non-metallic box carries no such designation. If the drawing calls out a rated partition, this is the box family to pull, in single-gang HH121ADJ or two-gang HH239ADJ.
2) What is the part number for the two-gang Carlon high-heat adjustable box?
Two-gang is HH239ADJ. Single-gang is HH121ADJ. Those are the only two sizes in the high-heat adjustable line, so if you're running a duplex plus a switch at one location, order the HH239ADJ rather than ganging two singles.
3) Is the Carlon high-heat adjustable outlet box UL listed?
It carries UL E11461 and UL R9140. Those are the listings to reference if a facilities or inspection department asks for documentation on the box in a rated assembly.
4) Does the Carlon HH121ADJ come with knockouts for conduit?
No. The high-heat adjustable box ships with zero knockouts. You make your own openings where you need them, which is what lets you bring cable or conduit in from whatever direction the retrofit opening allows. Plan on a cable connector appropriate to what you're running, since there's no factory-punched entry to work with.
5) What is a Carlon high-heat box actually made of, and will it stand up to heat?
Polyester, not the standard PVC used in ordinary blue boxes. That's the whole point of the high-heat designation, and it's why this box is specified where an ordinary thermoplastic box would not be accepted. It's molded in blue, so it's easy to pick out of a bucket of standard boxes on the truck and easy for an inspector to spot in an open wall.
6) What does adjustable mean on this Carlon box, and why would I want it on a remodel?
The adjustable feature lets the box face be set relative to the finished surface after the box is in the wall, so the device sits flush regardless of how thick the finish material ends up. On a retrofit that matters, because you're often cutting into an existing wall where the drywall thickness, a skim coat, or a layer of added board isn't known until you're there. It saves the usual fix of stacking device extension rings.
7) Can I use one of these boxes in a corridor wall in an apartment building or a school?
Yes, if the wall is a rated assembly. The high-heat adjustable box is designated for fire-rated walls in residential and light commercial construction, which covers multi-family corridor and demising walls, offices, retail, and institutional buildings of that construction type. For heavy industrial or a wall assembly outside that scope, verify the assembly listing governs the box you're allowed to use.
8) Should I use a steel box instead of the Carlon high-heat box in a rated wall?
Either can be correct, and the deciding factor is the wall assembly listing plus how the box is protected, not the box alone. Where a non-metallic box is acceptable, the high-heat polyester version is the one to use rather than a standard PVC box, because it's the one designated for rated walls and it avoids bonding a metal box back to the equipment ground. Where the assembly calls for metal, no plastic box substitutes for it.
9) Where is the Carlon HH239ADJ made?
The high-heat adjustable boxes are made in the United States and carry the Carlon / Nutek brand label. That matters if you're procuring under a domestic-preference requirement on a government or institutional job.
How fast can I get the Carlon HH239ADJ 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 Carlon HH239ADJ come with a warranty?
Absolutely. The Carlon HH239ADJ 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 Carlon HH239ADJ?
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 Carlon HH239ADJ from ZenSupply?
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