Best Square Electrical Boxes in 2026

Drawn construction of pre-galvanized steel

4 in. square, 2-1/8 in. deep

Supplied with eleven 1/2 in. and six 3/4 in. knockouts

Durable High-Impact PVC construction

Mounting hardware and installation instructions included

Seven 1/2in. or 3/4in. outlets

Heavy duty 42 lb. mounting screws supplied

Mounts to wood or metal stud 25g

Extra thick PVC wall material creates stability and rigidity

Product name: junction box, project box; Waterproof Rating: IP65

Ideal for electronic projects, instrument enclosure, power supply units, temperature controller box, etc

Material: ABS ,which is durable and practical; Main Color: Black

Replacement Cover, 1-Gang, Vertical, Clear, For Use with Weatherproof-In-Use Box

DBVC-1 Vertical Recessed Electrical Box Replacement Cover for Inbox Electrical Boxes, 1-Gang, Clear, 1-Pack

Additional Features: UV Rated Plastic for Long Outdoor Life

Weatherproof outlet box designed to house a two-gang switch or receptacle configuration in moisture-prone and outdoor locations; includes three 0.50” diameter threaded holes

Die-cast metal construction effectively seals out moisture, dust, debris, and insects to protect outdoor receptacles

Perfect for outdoor and moisture-prone applications, such as warehouses, pool houses, greenhouses, garages, restaurants, patios, and more!

Made in the U. S. A

UL Listed, Weatherproof

Diecast zamak alloy, Durable powdercoat finish, Corrosion resistant

Welded 4 in. square box for installing receptacles, switches or fixtures in walls or ceilings

Combination screw heads allow quick installation

UL Listed and acceptable in 2-hour fire rated walls

Heavy duty 16 GA welded steel construction

Screwed on flat cover with key holes for easy assembly

Four wall mounting holes in back

FOR REMODELS AND RENOVATION: Our Newhouse Hardware 1-Gang PVC Old Work Electrical Outlet Box is a plastic junction box that's designed to work with non-metallic sheathed cable for your electrical equipment.

VERSATILE ELECTRICAL BOX: Our single-gang electrical box fits a variety of remodeling needs. You can use it as an electrical junction box, switch box, GFCI box, or duplex receptacle outlet box.

IDEAL FOR HOME IMPROVEMENT: Get a durable old work box that's usable for a broad range of refits in your home. It's designed for most residential home improvement and light commercial electric needs.

【Size】- Outer size of the project box: 3.94"x2.68"x1.97"(100 x 68 x50 mm); Inner size of the project box:3.66" x2.4" x 1.73" (93 x61 x44mm)

【Superior Electrical Safety】– IP65 Rated Indoor & Outdoor Waterproof Junction Box protect against dust, corrosion and splashing water, helps keep all your home electrical equipment Clean & Dry.

【Superior Durable】- Made of high-quality ABS material that offers outstanding impact resistant and electrical insulation, Moisture-proof, sunscreen, anti-corrosion, durable for years use. can keep your equipment well-protected in harsh environments.

Positioned to accommodate 1-2 switch boxes

Combination screw heads allow quick installation

Drawn construction

Provide a junction for conduits or can house a single wired device such as a receptacle or switch

Features three 1/2-in knockouts and 18. 3 cu. in. capacity

Includes mounting lugs, closure plugs and a pre-installed ground screw

Carlon non-metallic boxes feature PVC construction for easier installation

Designed and listed for use with non-metallic sheathed cable in accordance with Article 314 of the National Electrical Code

All PVC boxes are permissible for use with 90 Degree C connectors

Used for extending set back electrical boxes up to 1-1/2-inches, levels and supports wiring device

Automatically levels and supports outlets, switches, GFCIs, and other standard devices

Works with handy boxes and 4-inch square electrical boxes with plaster rings for single switches

Reinforced connector outlets.

State-of-the-art powder coat finish provides maximum weatherability and scratch resistance.

Rugged die cast aluminum construction

FEATURES: Ciata Saf-T-Bar lets you install a Ceiling Fan or Light Fixture without having access to attic spaces, and provides secure attachment to a ceiling joist. To make installation easier, you can position the electrical box anywhere on the bar depending on the needs. Saf-T-Bar features a heavy duty, Metal Electric Box with wiring capacity of 15.5 cubic inches and dual mounting capability for light and heavy fans and fixtures and is ideal for new construction or where attic is accessible.

USES: Ciata Saf-T-Bar Design allows secure installation for new construction, or remodel applications with attic access can be used for installation of ceiling fans of any style and supports up to 70 pounds. Lighting fixtures and chandeliers can also be mounted using it, and Saf-T-Bar supports light fixtures up to 150 pounds on 16- inch centers and up to 50 pounds on 24-inch centers. Ciata Saf-T-Bar can be used for engineered truss application.

INSTALLATION FRIENDLY: Ciata Saf-T-Bar is specifically designed for engineered truss application, and the end brackets have a 90-degree angle lip for easy positioning, while the square tube adds strength to the design making it ideal for new construction and remodelling projects with attic access. Additionally, the bar also includes a Saf-T-Cap to protect bolts and wires during drywall installation and painting.

【ETL Listed】: NEMA 14-50R receptacle 125V/250V, power up your RV and trailer at camping ground. It can be installed outdoors, and work with your motorhome, welder, etc.

【Enough Space】: There is enough space to close the lid while plugging in the cord even with a big handle. You can also adjust the box lid open position while installing the panel and connecting the power cord.

【Weatherproof】: Constructed of heavy-duty metal with powder coating, it is durable enough for withstanding the elements. Rubber gasket under “knockout panel” secures weather resistance for the internal wires and connections.

Product Name: Junction Box ; Waterproof Rating: IP55 ; Qualification: CE、ROHS

Project Box Cable Entries Number: 7; Mounted Type: Surface Mount;Electric Enclosure Material: ABS, Rubber; Main Color: White

Product Dimensions: Outer Size : 3.4" x 3.4" x 2"/85 x 85 x 50mm(L x W x H) ; Inner Size: 3.11" x 3.11" x 1.89"/79 x 79 x 48mm(L x W x H) - - (Allowable Error: ±2mm)

Hubbell Square Box 4 In. Eight 1/2 In. And Four 3/4 In. Knockouts 1-1/2 In. Deep

Boxes are installed in ceilings or walls for lighting fixtures

This is manufactured in United States

A pop up outlet box is hidden in your countertop or floor when closed, all you see is a stylish black top. When you push the button the top tilts open revealing the outlets.

It can be installed in floor, countertop, deck, table, desk tops in kitchen, living room, office, public area, etc.

The product features two 20A tamper resistant receptacles and two 4.8V USB charging ports.

Dimensions: Overall: 5" x 5" x 3. 66" - Cover Length: 5" Cover Width: 5" Cover Height: . 22" | Junction Box Length: 3" Junction Box Width: 3" Junction Box Height: 3. 50"

Specifications: Nikel Plated Brass Square Cover. 2-Gang. 20A Tamper-Resistant TR / Weather-Resistant WR duplex receptacle outlet. Networking Cable Ready Datacom Ports. 14 total side and bottom knockouts

Applications: This can be installed in floors with raised foundations and subfloors, not in concrete slabs. Made to mount flush with floor or counter.

Round box adapter only

Adapts single gang cover to round receptacle box

Designed for use in conjunction with other weatherproof products

Product Name: Junction Box, Electrical Boxes ; Waterproof Rating: IP65; Qualification：CE、ROHS

Outer Size of the Enclosure Box: 3.9" x 3.9" x 2.8"/100 x 100 x 70mm(L*W*H) ; Inner Size of the Enclosure Box: 3.9" x 3.9" x 2.2"/ 99 x 99 x 56mm(L*W*H) - - (Allowable Error: ±2mm); Thickness : 0.1"/2.5mm; Screw Thread Dia.: 0.16"/4mm

Project Box Cable Entries Number: 7; Hole size:1"/25mm; Mounted Type: Surface Mount

EASY INSTALLATION - Our Lew Electric PUFP-SQ model is UL compliant for floor receptacle installations. Installs in concrete or wood floors and countertops. The back outlet box only takes up 3 1/8″ of space under your floor. The hole that needs to be cut in your floor is 4 1/16″ x 4 1/16″, the top bezel is 4 3/4″ x 4 3/4″.

FLOOR OUTLET - A quick charge is always available with this handy Lew Electric floor pop-up outlet! Designed to perfectly hide on your floor, this tamper-proof outlet box provides easy access to power when a wall outlet isn't nearby. When you need to plug something in, simply pull the button and the outlet pops up with ease.

SAFE & TAMPER RESISTANT - Dangling cords and open outlets can be dangerous for an electrical box, especially for pets and children. In the closed position only the top, rust-proof color shows on the recessed electrical outlet. This eliminates the danger of free-hanging cords.

✔ 【 Excellent materials】Made of high quality plastic PC, it will not crack or fade in sunlight, long life, high temperature resistant/corrosion resistant/solid construction/dust-proof/anti-UV.

✔ 【Easy installation】The junction box can be installed under the ground easily, more convenient, simpler and safer to wire, full protection of the cable.

✔ 【Junction box connection】one in and four out. Terminal Block Current:24A; Terminal Block Voltage: AC 450V. Available Wire Diameter : 4-8mm, 9-12mm.Working temperature: -40°C~105°C

Drawn construction

Used when you need to add extra wire capacity

Mounts directly on top of the square box

4" Square and 2-1/8" Deep Switch Box

30.3 Cubic Inches of Space

Made of 16 GA Welded Sheet Steel

COMBINATION PACK – This listing includes one 4" square electrical box and one 4” square duplex receptacle exposed work cover.

BOX – This 4" electrical box is designed to use to enclose electrical wire connections, receptacles, or switches. Constructed using the drawn method, this box is also ideal for exposed work applications.

COVER – This 4" square exposed work duplex receptacle cover includes the required hardware for mounting the receptacle. With its crushed corners, no bonding jumpers are required for this cover.

👀Project box inner size: 4.6 inches (L) x 4.1 inches (W) x 3.7 inches (Deep) / 115 x 105 x 94mm;Total size:5 inches (L) x 5 inches(W) x 4 inches (H)/125 x 125 x 100mm

👍Electrical box made of ABS and Rubber, sturdy and terrific,sealed, moisture proof, sunscreen, anti-corrosion, durable for years

💡You only need to use an ordinary small screwdriver, you can easily install and disassemble, use very convenient, Easy to operate and repair, no cable cutting.