We consider a 3 gang box extender to be a worthy investment in the long run. Let’s take you step by step, type by type, and find the best 3 gang box extender for you.

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Our Top Picks:

Best Overall: Buy: Arlington Industries 3 Gang Box Extender READ REVIEW

Best For Existing Drywall: Buy: Smart Fill Spacers 3 Gang Box Extender READ REVIEW

Best For Easy Install: Buy: Imbaprice Electrical Box READ REVIEW

Best For Water Proof: Buy: Hubbell 3 Gang Box Extender READ REVIEW

Best For Worth The Money: Buy: Arlington Old Work READ REVIEW

Best With Flange: Buy: Receptxtenders Outlet Box Extender READ REVIEW

Best For Light: Buy: Imbaprice 3 Gang Box Extender READ REVIEW

Best For Single Gang: Buy: Arlington 3 Gang Box Extender READ REVIEW

Best For Extra Room: Buy: Receptxtenders 3 Gang Box Extender READ REVIEW

Best Overall: Arlington Industries 3 Gang Box Extender

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Not everyone likes to purchase boxes for their daily purpose, but the Arlington industries 3 gang box extender would be an anomoly. The Arlington industries 3 gang box extender works for other standard devices, works as advertised and it has a mounting screw. Make sure this fits by entering your model number. Further, the extender is inexpensive and it is great for good quality.

Above all, the Arlington industries 3 gang box extender looks good and it is used for junction boxes.

Almost all customers found that the extender is used to correct the fit and finish. And, a few also found that the extender is a good fit for tile work. Also, they strongly agree that the outlet is then attached to this, so a cover will cover it nicely.

• It is easy to install extenders for single gang outlets.
• This will not support the screw that attaches the plug to the original box.
• This is great on standard single outlet/switch boxes.
• These are on prime, ensuring prompt delivery.

Best For Existing Drywall: Smart Fill Spacers 3 Gang Box Extender

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Next on the list, we've got yet another extender that manages to win our hearts. It's the Smart Fill Spacers 3 Gang Box Extender and it's widely considered as one of the most convenient extenders you can buy. The smart fill spacers 3 gangbox extender works for concrete wall, is current and it is pretty good. Creates a solid surface for securing an outlet or switch when the electrical box is recessed. In addition, the extender is great with great quality and it works well.

The box worked fine and it is good for fast delivery. Finally, the smart fill spacers 3 gang box extender is small and it does the job.

Almost all customers quickly discovered that the box came in handy as well. In addition, a few strongly agree that the boxes are color coded to make finding the right size easier. And, they say that the extender comes in different thicknesses. To sum up, for most buyers, Smart Fill Spacers product was what they were looking for.

• They can be stacked in combination, available in 1/4, 3/8, and 1/2 inch sizes.
• These fit well and a couple where they were too long or too short.
• These are readily available at most hardware and bigbox stores.
• These fit on the outside of the front of the electrical outlet boxes.

Best For Easy Install: Imbaprice Electrical Box

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The Imbaprice Electrical Box is satisfactory and appropriate and fits well with your regular use. The imbaprice electrical box offers premium quality products with maximum performance. The Manufacturer says: Our mission is to provide users with the ultimate audio and networking transfer media. Also, this current, is very simple, it provides great value and has a perfect design.

The box is very deep, it is used for light switches and has a good design. Above all, the imbaprice electrical box is designed for easy installation, fits snuggly, it is very happy and has an excellent design.

Almost all buyers found that the extender is great for use with added wall wainscoting to extend a 3 - plug box. In addition, they also found that the extender is no use because those holes are too loose and can't hold a screw any more. In addition, they strongly agree that these slip in around the inside of the box and are then held in place by the screws which anchor the switches or plugs in place.

• This allows for a cleaner,. Overall, it is rock solid and has a great design.
• It allows you to correct setbacks and insulate devices with an easy install design.
• The Manufacturer says: Our top-notch products will aid you in completing your objectives.
• 6X flat head phillips machine screw, 6-32 x 1-1/2" included.

Best For Water Proof: Hubbell 3 Gang Box Extender

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The Hubbell 3 Gang Box Extender might be a relatively new release, but it's still nothing short of impressive this year, thanks to multiple price cuts and added new features over the past few months. The hubbell 3gang box extender comes with installation hardware and it looks good. Make sure this fits by entering your model number. Further, the extender is used to provide additional capacity needed for nec box fill requirements.

Finally, the hubbell 3 gang boxextender can ask for good quality and it is weather resistant.

Most buyers quickly discovered that the box is designed for a flat surface. In addition, a few also found that the box is a great fit to the existing electrical box. Furthermore, a few also found that the extension box contacts the original recessed metal box at all.

• Installation hardware, gasket, and ground screw provided.
• This is water proof and it is small.
• One of the newcomers and featured product.

Best For Worth The Money: Arlington Old Work

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If you often find yourself scrambling for an appropriate and satisfactory extender, Arlington Old Work should be your first option for buying. The Arlington old work can be used for both new and retrofit projects. Arlington tvbu507 plastic screw mounted 2-gang recessed TV box 6.818 inch x 7.93 inch x 3.875 inch white TV box. This recessed TV box is specifically designed for helping organize wires for TVS and stereos.

The box is modern, it is perfect for safe installation and has added style. Also, the box is cost effective, it can be bought for good value and has a good design. Most importantly, the old work is made for low voltage, or high voltage, but this box has both.

Almost all customers agree that the extender is made in America, well most of it, by somebody that cares. Also, they also found that the box would be fastened to the sheetrock via screws. In addition, a few say that the large ports in the power part of the box made it easy to run romex through it.

• This features power on one hand.
• This is used for old construction and it is built for low profile.
• They are spaced closer together than 3 singles.
• This provides a secure installation, with a good appearance.

Best With Flange: Receptxtenders Outlet Box Extender

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The Receptxtenders line of boxes comes in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. The Receptxtenders Outlet Box Extender is great for building, made from non-flammable and it saves time. Receptxtenders allow you to shim out those electrical boxes flush with the newly installed wall covering without removing or repositioning the existing electric box. The only extension rings or extenders to work with every style box made.

Finally, the receptxtenders outlet box extender is used to the perfect size and it is easy to find.

Almost all buyers agree that the extender comes with screws for this purpose. And, a few say that the box is easy to install, also stacked for jobs needing more space. Moreover, a few strongly agree that the box will allow more room for putting the outlet/switch into place and less 'alignment' of more components. In short, many have used the box for more than a few months without letup, and it shows no sign of giving up.

• This works well for good quality and it looks great.
• This fits all types of electric outlet boxes.
• This is designed to work with both pvc and metal receptacle boxes.
• This feature assures receptxtenders outlet box extender meets all electrical codes.

Best For Light: Imbaprice 3 Gang Box Extender

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The features department is where Imbaprice 3 Gang Box Extender truly manages to shine. In addition, the box offers better device support in oversized or miscue wall openings. Talk about a way to save yourself some valuable time and money. Above all, the imbaprice 3 gangbox extender offers premium - quality products with maximum performance.

Almost all customers opine that the extender will fit 3 single pole switches. Therefore, most buyers found the box suited best, and no one questions it.

• The Manufacturer says: Our top-notch products will aid you in completing your objectives.
• 6X flat head phillips machine screw, 6-32 x 1-1/2" included.
• It allows you to correct setbacks and insulate devices with an easy install design.

Best For Single Gang: Arlington 3 Gang Box Extender

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Arlington has been making great boxes for years, thanks to a combination of clever design and appropriate materials. The Arlington 3gang boxextender allows the contractor to comply with 2008 NEC article 314.2. Levels and supports wiring device where the box is set back from wall surface, adjusted up to 1-1/2-inch box extension. And, this works in handy boxes and 4inch square electrical boxes with plaster rings for single switches or receptacle.ss. Finally, the Arlington 3 gang box extender works with all standard devices switches, and gfcis, manufactured from 105°c continuous use 94v0 rated flame retardant plastic.

Most customers agree that the extender makes the outlets perfect looking.

• Good brand reputation.
• New and hot releases.

Best For Extra Room: Receptxtenders 3 Gang Box Extender

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We would, of course, be remiss if we didn't mention Receptxtenders 3 Gang Box Extender for daily purpose. The receptxtenders 3 gang box extender made with the use of the finest flame retardant materials. Secure your wiring using switch box extenders. Often, during remodeling projects, you may find that the house’s electrical boxes need additional capacity to store bigger devices or additional wiring. The electrical box usually does n’t have enough space to support the remodel.

Most importantly, the receptxtenders 3 gang box extender work well with single as well as double - gang electrical boxes and fix any sunken or loose wall plates.

• This is adjustable, made from non-flammable and it allows for extra room.
• New and hot releases.