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Plastic Old work Box extender Electrical Box

Ratings & Reviews for CANTEX Plastic Old work Box extender Electrical Box

4.3
139
Review
 4.3 out of 5
139 Reviews


79% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this electrical box extender for reliably bringing outlets flush with new wall surfaces after renovations like shiplap, tile, or cabinetry installations. Most highlight straightforward installation and appreciate its ability to meet electrical code requirements for safety and non-flammable coverage. The design accommodates varied wall thicknesses effectively. However, several note the included screws run too short to secure the extender properly, requiring separate purchases. Despite this frustration, most customers find it performs exactly as needed for retrofit scenarios.

Customer review summary generated by AI, including incentivized reviews.
139 Customer Reviews

Extended

Would Not Recommend

It worked to extend box for outlet wall came out 5/8 added it worked great

October 20, 2022
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Stupid Design

Would Not Recommend

The box has goofy corners that won’t fit a well cut hole with square corners and the screws provided are way too short.

September 28, 2022
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Would work

I ended up not needing these. They should have worked perfectly if needed.

September 15, 2022
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Expensive but I couldn't use many

Would Recommend

It s acceptable for single use but not applicapable for dual or triple switdh boxes

July 20, 2022
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works with the blue plastic electrical boxes.

Would Recommend

extended the existing plastic outlet box easily that had been installed behind the drywall.

July 17, 2022
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Normal Sized Screws

Would Not Recommend

An extender box should have EXTENDED screws. It doesn't. Defeats the whole purpose of an extender box.

July 5, 2022
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OVERPRICED

Works well but extremely overpriced. Should sell for $ 1-2

June 15, 2022
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Worked well for tiled wall

Would Recommend

Applied 1/4” tile backer board and tile over drywall and needed to extend electrical boxes. This products worked so well, it allows adjustment of depth and easily rests against tile. My electrical outlets were perfectly recessed and the covers plates look amazing. Plus so easy to install.

May 5, 2022
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Works for Trim

Would Recommend

Used this to extend the box out in order to put the switch on a wide trim board. worked perfectly.

November 4, 2021
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Works well for tile backsplash installation

Would Recommend

It is functional - nothing to like or not like abut it.

September 8, 2021
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