The 10 Best Outdoor Electrical Box Choices of 2021

By Sophia Chartrand Sophia Chartrand has been verified by Muck Rack's editorial team
Published on April 5, 2021

Whenever you do electrical installations as a professional or as a homeowner, safety is always your highest priority. A quality outdoor electrical junction box ensures reliable connections between electrical equipment and power lines. It is a safe and effective solution for holiday lighting, heating and cooling, and the installation of aquatic systems outdoors. Their tough durability and convenience allow them to withstand the elements.

The convenience of outdoor outlets makes them the ideal way of plugging in your outdoor tools and lighting, and they can be installed in a matter of hours. Different from a standard indoor electrical outlet, outdoor electrical outlets are waterproofed, so the outlet remains protected even when a cord is plugged into it. 

If you’re in a hurry, here’s our top 3 quick picks for the best outdoor electrical boxes of 2021

Key Considerations Before Purchasing Outdoor Electrical Boxes

outdoor electrical box

What is the outside electrical box called?

Electric circuit breakers in a distribution board also go by the names panel, breaker, or electric panel. They divide electric power into a number of sub-circuits while a protective fuse or circuit breaker is provided for each circuit in a common enclosure.

Why are electrical boxes outside?

A new regulation has made it so that an electrical box should be permanently attached to the exterior of a home. The fire department imposed this regulation in part because firefighters will be able to swiftly shut off all the electricity if they arrive at a house that is on fire.

How do you seal an outdoor electrical box? 

Before you screw the box to the wall you need to apply a paintable silicone acrylic caulk around the entry hole and the back of the box. An external ear or recess should be incorporated into the box to serve as a mounting base.

We looked for weather-resistant, durable, and versatile outdoor electrical boxes when selecting our top picks and then selected seasoned experts’ picks and Amazon’s choice.

The 10 Best Outdoor Electrical Boxes of 2021 

1. SOCKiTBOX – The Original Weatherproof Connection Outdoor Electrical Box

The IP55-rated indoor and outdoor water-resistant power cord connection box keeps electrical equipment in your home dry and protected. The Medium Size is perfect for protecting multi-socket gear such as power strips, surge protectors, plug-in schedulers, extension cords, and more. Designed with a unique interlocking lid, the lid is able to open easily and mold tightly to the cord when closed. With a lifetime warranty and massive, rugged plastic frame, silicone weatherproof seals, seals & blocks, this door ensures long-lasting protection.

  • Works well with small diameter cords 
  • Excellent construction and weatherproofing 
  • One customer reports that it came in plastic and that it cracked within minutes

2. Waterproof Extension Cord Connection Outdoor Electrical Box

The Thonapa Weatherproof Electrical Boxes have been built with heavy-duty plastic that is durable. This outdoor electrical connection cover keeps your outlets safe and dry while being ideal for landscape lighting, water features, Christmas decorations, power tools, and more. Waterproof, dust, dirt and other outdoor elements are no match for this sturdy waterproof container. With four direct mounting holes, two keyhole mounting slots, two optional drain holes, and a latch, this large power strip enclosure keeps your wires secure. And with a cable seal and retention clamp, hook and loop fastener strip, and hinged front cover. These outdoor connection boxes are easy to use and can be moved. 

  • It’s built well
  • Price is worth its value
  • Perfect for holiday lighting 
  • One customer reports that water leaked into the box 

3. Nineleaf 1PK Outdoor Electrical Junction Box

These waterproof junction boxes are used abroad, garages, houses, gardens, farms, ponds, and more. The waterproof Junction box is made of ABS plastic and is waterproofed up to IP66. It has a durable seal that protects against moisture ingress, UV exposure, and corrosion. Good for outside usage. The DIY opening hole design ensures the water tightness of the waterproof project box. Up to nine holes are possible on the four sides and bottom of the waterproof box, holes can be made to meet your needs. The waterproof electronic box is maintained with a cover and four screws. A rubber stripe is integrated at the interface between the cover and the waterproof box to improve water resistance and allow safe use of the waterproof box in adverse conditions.

  • Great size and quality
  • Great box for camera installation 
  • Good customer service when needed 
  • Good for landscaping lighting junctions
  • One customer reports that the slugs don’t punch out clean

4. Double Gang Metallic Electrical Outlet Box

This box comes with gaskets, mounting hardware, closure plugs, and screws that self-tighten. The outlet box has three (3) 1/2-inch outlet holes inside it which enables it to conceal moisture and dirt, thus keeping any electrical system in place. A Bubble Cover has a patented design concept that allows us to use a Gang in a horizontal or vertical position and in more than 45 configurations, whether they be GFCI or Round. A weather-resistant aluminum alloy outlet box that is constructed of heavy-duty die-cast aluminum with a powder coat finish is protected from the elements by the outlet cover, which is made from durable polycarbonate and is lockable and easy to install. 

  • Very adaptable
  • Provides a secure seal 
  • Perfect for residential uses 

One customer reports that the installation process is “annoying”

5. LuSumtly Project Box IP65 Waterproof Dustproof Outdoor Electrical Box

This junction box is sealed waterproof and comes with a waterproof gasket and screws to close the box. It is ideal for electronic projects, instrument enclosures, power supply units, temperature controllers, etc. This material is very sturdy and sturdy and is perfect for DIY projects. The materials can be punched and drilled very precisely for a wide range of items such as meters, LCD screens, sockets, LEDs, buttons, and so on. They have three holes that can be used for screws, for example, to mount a prototype; the hole would work fine for that.

  • It is waterproof
  • Price is worth its value 
  • Doesn’t come with chords

6. RVGUARD 50 Amp Power Outdoor Electrical Box

With a padlock on the cover, RVGUARD power outlet boxes provide security against unauthorised use. RVGUARD is constructed with 3 good solid construction knockouts on bottom and sides of its sturdy RV receptacle box. The knockouts give you the option of connecting conduit from outside or inside the box. With the big handle or the thicker wire to plug in the 30A RV cord, the RVGUARD power outlet box has enough space to close the door while plugging it in. Also, the lid can be positioned so it stays up while it is being handled. The box is durable and can be mounted inside and outside of your motorhome, EV, generator, welder, etc.

  • Easy to install
  • It is weatherproof
  • Provides enough space
  • One customer reports that the box provides a small wiring compartment 

7. BUD Industries NBF-32334 Plastic Outdoor NEMA Outdoor Electrical Box

The BUD Industries NEMA Box is a durable, hardworking industrial supply that is suitable for hazardous environments. With a waterproof body, the electrical supply is protected from contact with chemicals and liquids. This durable cabinet with a light gray finish fits a large number of electrical supplies with ease. For fireproofing electrical settings, this lightweight box is easy to work with and easy to assemble. Mounting brackets are made of stainless steel and come with hardware for NEMA economy boxes. Portable electric panel boxes can be used outdoors or indoors. They have mounting hinge pins that make the installation much easier and take up less space.

  • It is waterproof
  • Comes in a perfect size
  • Provides a great enclosure
  • No cons were reported with this product

8. Hubbell-Bell 5320-0 Single Gang 3-1/2-Inch Outlets Weatherproof Box

In wet and damp locations, the Hubbell Raco 5320-0 Single Gang Weatherproof Box 3-1/2-Inch Outlet may be used as a junction box or service entrance as a weather-resistant box to accommodate wiring between circuits. The threads and hubs inside these are NEMA-compliant. The hubs accept all threaded fittings and threaded conduits and each package comes with instructions and two closure plugs.

  • It is weatherproof
  • Price is worth its value 
  • Provides an easy installation 
  • One customer reports that the box isn’t deep enough

9. Zulkit Junction Outdoor Electrical Box

This electrical unit is not only weather-resistant but is also waterproof and does not allow dust to enter. It allows you to drill holes inside according to the needs of your project with no cracks or compromises The box is easy to install; the hinged enclosure makes it easier to open and close; It features a grey transparent cover, one of the benefits is that you can see the inner workings of the junction box. Moisture-proof, sunscreen, anti-corrosion, and anti-sun protection make this junction box a safety system from weather-related environmental hazards.

  • Easy to operate
  • Provides a comprehensive industrial enclosure 
  • No cons are reported for this product

10. Siemens TL137US Talon Temporary Outdoor Electrical Power Outlet Panel

Construction sites and RV parks in particular need power outlet panels with Talon’s line of power outlets. For temporary use only, power outlets are used on construction sites until electrical power can be supplied. For example, Recreational Vehicle parks rely permanently on power outlet panels as a power source for the RV’s distribution system. Almost any installation can be addressed with a wide variety of configuration options. These include surface mounting (pole mount) and pedestal mounting, as well as top or bottom feeds, and with or without meter socket provisions.

  • Excellent for RVs
  • Excellent build quality
  • Internal wiring and breakers are present

One customer reports that the box isn’t install friendly 

Buyer’s FAQ for Outdoor Electrical Boxes

Can you use plastic electrical boxes outside?

For exterior installations and in circumstances where wiring runs are not concealed in wall cavities or ceilings, metal conduit cannot be used with plastic junction boxes.

Do you need a junction box for outside light?

Lighting fixtures must be listed by the NEC, and are required to be used according to the manufacturer’s directions. It is not permitted to mount directly to a surface, it is meant for mounting on boxes, thus installing it directly to a surface is not applicable.

How do you protect outdoor outlets in the rain? 

A weatherproof cover, which is typically made from plastic, should be installed. A weatherproof cover is designed to protect exterior outlets from moisture and water.

These are the most weatherproof and durable outdoor electrical boxes you can find that are currently top-selling right now. From their amazing price values to the protection of water accidentally flowing into the box, you can easily save a trip to Lowe’s or Home Depot by just checking out some of these best-selling boxes on Amazon above.

Consider your individual needs before purchasing and remember to ask yourself. Is it durable? What length do you need? Do you require a polarized or non-polarized plug? Is price important? Safety? 

Those are just some factors to consider before you click that easy buy now button. 

Other Related Products You May Need for Your Home

We hope you enjoy these products! But keep in mind, Grit Daily might take a small commission on the items recommended here—but that doesn’t mean we don’t believe in them. We only recommend products that we would buy or use ourselves, so don’t be wary of our suggestions. 

By Sophia Chartrand Sophia Chartrand has been verified by Muck Rack's editorial team
Journalist verified by Muck Rack verified

Sophia Chartrand is an Affiliate Content Contributor here at Grit Daily, covering affiliate product reviews. Raised in the beautiful mountains of Park City, Utah, she dominates the music industry as a freelance music journalist and publicist, as well as currently working her way up to artist management and production herself. While she's not carrying too much on her plate, you can find her hiking, cooking, or adventuring into the unknown.

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