Carlon 1-Gang PVC Box Extender...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$25.71
Carlon 1-Gang PVC Box Extender - Blue Non-Metallic Outlet Box Extension

Carlon 1-Gang PVC Box Extender - Blue Non-Metallic Electrical Box Extension

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Model: B1EXT-CRD

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

$25.71
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Carlon 1-Gang PVC Box Extender - Blue Non-Metallic Electrical Box Extension

Professional electrical box extension solution for versatile applications

The Carlon 1-Gang PVC Box Extender provides reliable electrical box extension capabilities with durable blue non-metallic PVC construction. This professional-grade box extender delivers dependable performance for extending existing outlet boxes in residential and commercial applications, featuring a clean one-gang configuration with zero knockouts for streamlined installation.

Professional Features & Benefits

  • PVC Construction: Durable non-metallic material provides excellent corrosion resistance and long-lasting performance in various environments.
  • One-Gang Configuration: Standard single-gang design ensures compatibility with existing electrical boxes and standard outlet configurations.
  • Blue Color Coding: Professional blue finish provides easy identification and maintains consistent appearance in electrical installations.
  • Zero Knockouts: Clean design without pre-punched knockouts allows for custom installation flexibility and maintains box integrity.
  • USA Manufacturing: Manufactured in the United States ensuring consistent quality standards and reliable supply chain support.
  • Electrical Department Grade: Professional-grade construction suitable for commercial and residential electrical applications.

Technical Specifications

  • Brand Label: Carlon / Nutek
  • Country Of Origin: United States (US)
  • Department: Electrical
  • Effective Date: 20080116
  • Idea Granular Category Code Igcc : 4433 >> Outlet box
  • Number Of Knockouts: 0
  • Product Color: Blue
  • Product Material: PVC
  • Product Name: PLASTIC ELEC BOX EXTENDER
  • Product Type: One-Gang Box Extender
  • Replacement Product Id New : 7TAA040980R0066

Professional Applications

  • Residential electrical box extensions
  • Commercial outlet box modifications
  • Electrical renovation projects
  • Professional electrical installations
  • Building maintenance and upgrades
  • Contractor electrical work

Why Choose Carlon Quality?

Carlon delivers trusted electrical solutions with professional-grade PVC construction and USA manufacturing standards. This box extender provides reliable performance with durable non-metallic materials designed for long-term electrical applications, ensuring consistent quality and dependable service in professional installations.

Manufacturer Resources

Product Specs

Brand Label:
Carlon / Nutek
Country Of Origin:
United States (US)
Department:
Electrical
Effective Date:
20080116
Idea Granular Category Code Igcc :
4433 >> Outlet box
Number Of Knockouts:
0
Product Color:
Blue
Product Material:
PVC
Product Name:
PLASTIC ELEC BOX EXTENDER
Product Type:
Electrical Box Extenders
Replacement Product Id New :
7TAA040980R0066
Product Group:
Single Gang Boxes

Carlon B1EXT-CRD – Frequently Asked Questions

1) What does a 1-gang box extender actually do on a wall box that sits too deep?
A box extender is a collar that brings the face of a recessed electrical box out flush with the finished wall surface. The Carlon B1EXT-CRD is the single gang version: it drops into an existing one gang outlet box whose edge ended up set back behind drywall, tile, panelling or a second layer of board, so the device and cover plate mount at the correct plane instead of floating over an open cavity. It is not a box in its own right, so it does not add wiring volume for you to fill with new splices.
2) Will the Carlon B1EXT-CRD extender fit a standard single gang outlet box?
It is built to the standard one gang footprint, so it lines up with the common single gang wall box and the standard device and plate pattern used with it. It will not cover a two gang opening, and it is not a round or octagon fixture box fitting. For a double gang opening you need a 2-gang extender instead.
3) Can I use a plastic box extender on a metal electrical box, or does it have to match the box material?
The material of the extender does not have to match the box. The Carlon extender is PVC, non-metallic, and is commonly fitted to either a metal or a non-metallic one gang box to correct depth. The one thing PVC does not do is carry ground continuity, so with a metal box your equipment grounding still has to be carried by the conductors and device screw, not through the extender.
4) I am tiling over an existing backsplash and the receptacles are now recessed. Is this the right fix?
That is exactly the situation a one gang extender handles. Adding tile, backer, shiplap or a second layer of drywall pushes the finished surface past the box edge; the extender fills that gap so the receptacle or switch sits at the new surface and the plate seats flat. The Carlon unit is the single gang version, so it suits one receptacle or one switch per opening.
5) Why does this box extender have no knockouts?
Zero knockouts is deliberate. An extender is not a place to bring cable in; it only extends the opening of a box that already has its conductors landed. With no punched knockouts there are no open holes to blank off after install and nothing to compromise the closure of the assembly. If you actually need another cable entry, you need a box or an extension ring with knockouts, not this part.
6) What part number do I order for the Carlon single gang PVC box extender?
Order Carlon B1EXT-CRD. That is the manufacturer part number for the blue non-metallic one gang extender, carded packaging. Distributors and counter staff will recognize it by that number.
7) Does the box extender come with screws, or do I reuse the ones already in the box?
Plan on the mounting hardware being part of your install, not the part. An extender is secured through the existing device ears into the box, and most electricians reuse the box screws or substitute longer 6-32 device screws to make up the added depth. Have longer 6-32s on the truck before you start the run.
8) Is the Carlon B1EXT-CRD made in the USA?
Yes, it is manufactured in the United States, sold under the Carlon / Nutek brand label. That matters on public and institutional work where domestic sourcing shows up in the specification.
9) Does the blue color matter, or is it just cosmetic?
Blue is Carlon's standard color for its non-metallic electrical boxes and fittings, so the extender matches the boxes already in the wall on most residential and light commercial jobs. Once the cover plate goes on, none of it shows. It is an identification convention, not a performance rating.
How fast can I get the Carlon B1EXT-CRD 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 B1EXT-CRD come with a warranty?
Absolutely. The Carlon B1EXT-CRD 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 B1EXT-CRD?
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 B1EXT-CRD from ZenSupply?
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