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Internet # 100404090

Model # A420RR

Store SKU # 489654

2-Gang 1/2 in. Electrical PVC ENT Box Mud Ring

$1.98

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Product Details

About This Product

The 2-Gang ENT Box Extender can be used with different wallboard thicknesses. It is suitable for use with a 2-Gang device. The extender is crafted with PVC for durability and is UL listed and fire rated to ensure safety.

Highlights

Product Information

Internet # 100404090

Model # A420RR

Store SKU # 489654

Specifications

Dimensions

Product Depth (in.)

0.5 in

Product Height (in)

4

Product Width (in.)

4 in

Details

Indoor/Outdoor

Indoor

Material

PVC

Metallic/Non-Metallic

Non-Metallic

Number of Gangs

2

Pack Size

1

Returnable

90-Day

Warranty / Certifications

Certifications and Listings

UL Listed

Manufacturer Warranty

Yes

Questions & Answers

Can I use it to extend a metallic box?
ByDec 28, 2023
2 Answers | 
Answer This Question

This would depend on the application, so you would need to check your local code.

By|Dec 29, 2023

    Yes you can

    By|Jan 10, 2026

      (1)

      How many c.u have that ring
      ByDec 26, 2023
      2 Answers | 
      Answer This Question

      Look close at the photo - it says 7.4 cu.in. cast into the plastic.

      By|Aug 12, 2024

        The cubic capacity is 6.1 cu in

        By|Jan 21, 2024

          (1)

          What size, length, and type of screw do I buy with this? Thanks!
          ByOct 12, 2022
          1 Answer | 
          Answer This Question

          8-32 screws with length 3/4"

          By|Apr 16, 2025


            How do you attach it to the box that you need to extend ?
            ByApr 10, 2022
            2 Answers | 
            Answer This Question

            Using two or four screws in the corners of the box in your wall and the corner of the extender.

            By|Jan 22, 2023

              That’s what the 4 open ends on each corner is for but you have to also purchase the box that supports the attachment 

              By|Apr 11, 2022


                is a 3 gang version of this extender available
                ByMar 10, 2022
                1 Answer | 
                Answer This Question

                Greetings Prout! Thank you for your interest in the Carlon 2-Gang ENT Box Extender. This item is not offered in the 3-Gang.

                By|Mar 19, 2022


                  Does this come with longer screws?
                  ByJul 8, 2018
                  3 Answers | 
                  Answer This Question

                  This extension ring does not come with screws.

                  By|May 5, 2023

                    Mine did NOT come with longer screws. We keep an assortment of screw lengths. Home Depot actually stocks a box (at most locations) that is inexpensive with multiple lengths of device screws. Hope this helps!

                    By|Sep 24, 2019

                    You can purchase longer screws for these. I bought mine there hanging next to the boxes.

                    By|Aug 25, 2024

                      (2)

                      Why does the picture show this cover marked as 5/8? But in the specs it says height is .5 inch? This is an issue because have a box sticking out an 1/8 of an inch? How will the receptacles sit flush now?
                      ByMay 4, 2018
                      1 Answer | 
                      Answer This Question

                      Thank you for you question! This cover is our 1/2 in. raised cover part number A420RR.

                      By|May 5, 2023


                        Would this work to put on a crooked box to make it square on the wall?
                        ByFeb 14, 2018
                        5 Answers | 
                        Answer This Question

                        No, it will not square up a crooked box.

                        By|May 5, 2023

                          If the crooked box is set back, yes this could solve the problem. If the crooked box is flush to the drywall, it won't help. Hope this helps!

                          By|Sep 24, 2019

                          It won't straighten out the box, but may allow the cover to fit square with the world. Mike

                          By|May 5, 2023

                          (1)

                          Thank you for your question. This product will not straighten the box but it may allow the cover to fit squarely.

                          By|May 5, 2023

                            No because it screws into the existing box so it would be the same out of square shape. It also would bring the box out farther past the drywall. Your best bet is to purchase a box for "existing walls" or "old work" You will be able to cut a square hole very close to where your box is now, put the "old work" box in and bring the electrical wiring into it and put the outlets in that. The box fastens by tightening against the drywall and does not need to be nailed to a stud.

                            By|Nov 27, 2018

                              (1)

                              Viewing 1-8 of 10

                              Customer Reviews

                              4.5 out of 5

                              • 4.5 out of 51 reviews
                              • 88% recommend this product
                              Filter by:
                              Showing 1-10 of 51 reviews
                              Never knew this thing existed until my kid broke it. We had to set the boxes out to either 5/8" or 1/2" when I did construction
                              by
                              • Verified Purchase
                              These are definitely nice box extenders. They fit a typical residential nylon/plastic box as wel...
                              These are definitely nice box extenders. They fit a typical residential nylon/plastic box as well as a standard metal 4x4 box. Fairly universal and will save space in the truck since it fills two separate applications. we always run a ground strap from metal boxes to devices anyway, but I especially would recommend that when using the plastic/nylon spacer. I know the ground is still intact from the steel screws but...just to be safe. Sturdy product. Highly recommend.
                              by
                              • Recommended
                              Everything you need in a two gang box extender. This is made from plastic like that used in the t...
                              Everything you need in a two gang box extender. This is made from plastic like that used in the typical blue electrical boxes. Mine are the perfect thickness for adding 1/2 inch drywall to an existing situation or for situations where the boxes were placed flush with the studding. This would also work where you are adding a thicker ceramic tile. I especially like that this product is made in the USA.
                              by
                              • Recommended
                              I used this 2 Gang ENT Box Extender on my kitchen switch box. It had been open for months which ...
                              I used this 2 Gang ENT Box Extender on my kitchen switch box. It had been open for months which of course is a hazard. The two switches I used with this box lined up perfectly but screwing in the screws was a tad tight. Attaching this extender box to the over old box that was already in the wall wasn't as easy. The screw holes didn't line up but I made it work. I just need to get the cover plate now.
                              by
                              • Recommended
                              This customer chose to rate the product and not provide text.
                              by
                              • Verified Purchase
                              This customer chose to rate the product and not provide text.
                              by
                              • Verified Purchase
                              lt fit perfectly and was easy to install.
                              by
                              • Verified Purchase
                              This customer chose to rate the product and not provide text.
                              by
                              • Verified Purchase
                              This customer chose to rate the product and not provide text.
                              by
                              • Verified Purchase
                              Does not hold up well to sheetrock routing.
                              by
                              • Verified Purchase
                              Showing 1-10 of 51 reviews

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                              Product Snapshot

                              Ideal for extending 2-gang device boxes in various wallboard thicknesses, ensuring safe and durable installations.
                              Great for homeowners looking for a durable PVC box extender, making electrical installations easier.
                              Ideal for covering ENT boxes for future use, this durable PVC cover won't rust or corrode.
                              Great for mounting switches, receptacles, and devices with angled slots for easy alignment. Ideal for indoor electrical projects.

                              Weatherproof

                              Tamper-resistant

                              GFCI Compatibility

                              Lockable

                              Dimensions

                              H: 4 in., W: 4 in., D: 0.5 in.
                              H 4 in., W 4 in., D 0.75 in.
                              H 4 in. x W 4 in. x D 0.1 in.
                              H 4.15 in. x W 4.15 in. x D 0.5 in.