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Light Speed Delivery - Same-Day or Scheduled
Light Speed Delivery - Same-Day or Scheduled

Electrical Boxes

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SKU 862797

Handy Box 1-Gang Steel 13 cu. in.

Original price $5.12 - Original price $5.12
Original price
$5.12
$5.12 - $5.12
Current price $5.12
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About This Product Featuring a 5/8 inch recessed T-bracket, the 1-Gang 13 cubic inch Utility Box is suitable for installation on both wood and stee...

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SKU 579959

Junction Box 12 in. x 12 in. x 6 in.

Original price $74.03 - Original price $74.03
Original price
$74.03
$74.03 - $74.03
Current price $74.03
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About This Product A surface-mounted enclosure without entry hubs that permits the connection of multiple conduits and the making of wire splices i...

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SKU 106211

Indoor Screw Cover Wall Mount Box 10 in. W x 10 in. H x 4 in. D NEMA 1 Carbon Steel 1-Pack

Original price $56.36 - Original price $56.36
Original price
$56.36
$56.36 - $56.36
Current price $56.36
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About This Product The Indoor Screw cover serves as a wiring and junction box. Constructed from 16-gauge steel, it ensures durability. The sides ar...

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SKU 840236

Receptacle Cover Raised 4in. Square Single Duplex 1/2 in.

Original price $4.44 - Original price $4.44
Original price
$4.44
$4.44 - $4.44
Current price $4.44
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About This Product This 2-Gang Duplex Outlet is constructed from galvanized steel for long-lasting strength. It features listings from both UL and ...

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SKU 159160

Square Cover Raised 4in. For 30 or 50 Amp Receptacle 1/2 in.

Original price $5.37 - Original price $5.37
Original price
$5.37
$5.37 - $5.37
Current price $5.37
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About This Product The 1-Gang Square Dryer Receptacle Cover is designed to serve as a cover for a 4-inch square dryer or range receptacle box. This...

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SKU 244673

Single Receptacle Cover Raised 1-13/32 in. Square 4in. with 1/2 in. Height

Original price $4.51 - Original price $4.51
Original price
$4.51
$4.51 - $4.51
Current price $4.51
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About This Product Utilize this 2-Gang Round Receptacle Cover for installation on a square electrical box. Constructed from zinc-galvanized steel f...

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SKU 082182

Mud Ring Single Gang Raised 4-11/16 1/2 in.

Original price $5.73 - Original price $5.73
Original price
$5.73
$5.73 - $5.73
Current price $5.73
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About This Product 4-11/16 inch square box device cover, raised 1/2 inch. It offers 3 cubic inches of space. Suitable for one device. Single Gang D...

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SKU 187463

Weatherproof Box Closure Plug Metallic 1/2 in. Gray (4-Pack)

Original price $4.81 - Original price $4.81
Original price
$4.81
$4.81 - $4.81
Current price $4.81
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About This Product Threaded closure plugs are designed to seal off unused outlets. These plugs are suitable for use with weatherproof boxes. They c...

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SKU 482009

FSE Box 2-Gang 1/2 in.

Original price $10.84 - Original price $10.84
Original price
$10.84
$10.84 - $10.84
Current price $10.84
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About This Product Dual-gang, surface-mounted electrical box featuring a single conduit entrance hub without an outlet hub. Ideal for conduit termi...

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SKU 541823

Weatherproof Box Replacement Gasket 1-Gang 2-Pack

Original price $2.22 - Original price $2.22
Original price
$2.22
$2.22 - $2.22
Current price $2.22
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About This Product Replacement gasket designed for weatherproof covers. The gasket boasts a versatile design. Handy perforations enable swift and e...

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SKU 764773

Utility Box 1-Gang Silver

Original price $5.37 - Original price $5.37
Original price
$5.37
$5.37 - $5.37
Current price $5.37
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About This Product For indoor electrical box setups. This 1-Gang Utility Box includes an extension-ring design. Made from sturdy steel and has 1/2 ...

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SKU 930525

Weatherproof Toggle Switch Cover Non-Metallic 1-Gang, Gray

Original price $6.61 - Original price $6.61
Original price
$6.61
$6.61 - $6.61
Current price $6.61
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About This Product nonmetallic 1-Gang toggle switch covers are intended to offer weatherproof protection for an outdoor on-off toggle switch. These...

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SKU 864517

Weatherproof Box 1-Gang Non-Metallic White with (3) 1/2 in. Holes

Original price $10.23 - Original price $10.23
Original price
$10.23
$10.23 - $10.23
Current price $10.23
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About This Product Non-metallic weatherproof enclosures are designed to safeguard branch circuits in wet, damp, and/or dry environments. The powder...

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SKU 744239

Weatherproof Box 1-Gang Non-Metallic Gray with (3) 1/2 in. Holes

Original price $10.23 - Original price $10.23
Original price
$10.23
$10.23 - $10.23
Current price $10.23
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About This Product Non-metallic weatherproof enclosures are designed to safeguard branch circuits in wet, damp, or dry environments. The powder coa...

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SKU 865501

Toggle Switch Cover Kit Metallic Weatherproof 1-Gang, Gray

Original price $8.02 - Original price $8.02
Original price
$8.02
$8.02 - $8.02
Current price $8.02
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About This Product Weatherproof lever switch covers are crafted to offer protection for an outdoor on-off toggle switch against the elements. The t...

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SKU 948252

Weatherproof Extension Ring Metallic 1-Gang with (6) 3/4 in. Holes Gray

Original price $15.66 - Original price $15.66
Original price
$15.66
$15.66 - $15.66
Current price $15.66
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About This Product Weather-resistant extension rings are crafted for use in branch circuit wiring in wet, damp, or dry environments. These extensio...

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SKU 024812

Weatherproof Extension Ring 1-Gang Metallic with (6) 1/2 in. Holes Gray

Original price $12.88 - Original price $12.88
Original price
$12.88
$12.88 - $12.88
Current price $12.88
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About This Product Weather-resistant extension rings are crafted for branch circuit wiring applications in wet, damp, or dry environments. These ex...

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SKU 536467

Weatherproof Extension Ring 1-Gang Metallic with (4) 1/2 in. Holes Gray

Original price $11.48 - Original price $11.48
Original price
$11.48
$11.48 - $11.48
Current price $11.48
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About This Product Weather-resistant extension rings are crafted for branch circuit wiring applications in wet, damp, or dry environments. These ex...

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SKU 636151

Weatherproof Cover White 1-Gang Metallic with (3) 1/2 in. Holes

Original price $8.03 - Original price $8.03
Original price
$8.03
$8.03 - $8.03
Current price $8.03
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About This Product 1-gang rectangular lamp holder covers are intended for lamps featuring a 1/2 in. hub base. Constructed from high-quality die-cas...

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SKU 072246

Weatherproof Cover Metallic 1-Gang with (3) 1/2 in. Holes Gray

Original price $8.43 - Original price $8.43
Original price
$8.43
$8.43 - $8.43
Current price $8.43
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About This Product 1-gang rectangular lamp holder covers are intended for lamps featuring a 1/2 in. hub base. Constructed from high-quality die-cas...

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SKU 134096

Weatherproof Cover Metallic 1-Gang with (3) 1/2 in. Holes, Bronze

Original price $8.43 - Original price $8.43
Original price
$8.43
$8.43 - $8.43
Current price $8.43
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About This Product 1-gang rectangular lamp holder covers are crafted to accommodate lamps with a 1/2 in. hub base. Made from high-quality die-cast ...

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SKU 583868

Weatherproof Box Metallic 1-Gang with (5) 1/2 in. Holes, Gray

Original price $12.05 - Original price $12.05
Original price
$12.05
$12.05 - $12.05
Current price $12.05
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About This Product Weatherproof boxes are crafted for branch circuit wiring applications in wet, damp, or dry environments. These boxes accommodate...

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SKU 856522

Weatherproof Box Metallic 1-Gang with (4) 3/4 in. Holes, Gray

Original price $12.05 - Original price $12.05
Original price
$12.05
$12.05 - $12.05
Current price $12.05
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About This Product Weatherproof enclosures are intended for branch circuit wiring in wet, damp, or dry environments. These enclosures accommodate r...

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SKU 341591

Weatherproof Box Metallic 1-Gang Gray with (4) 1/2 in. Holes

Original price $8.88 - Original price $8.88
Original price
$8.88
$8.88 - $8.88
Current price $8.88
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About This Product Weatherproof enclosures are intended for branch circuit wiring in wet, damp, or dry environments. These enclosures accommodate r...

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Electrical Boxes: What You Need to Know

Electrical boxes, also referred to as conduit fittings or enclosures, are essential components for securing and routing electrical wiring in both indoor and outdoor environments. Available in waterproof options, these boxes are designed to resist moisture ingress and protect internal wiring from rain, splashes, or damp conditions, ensuring long-term safety and performance. Sizes range from ¼ inch to 12 inches, and shapes include both round and square formats to match various mounting requirements.

Type:

  • Boxes & Brackets: Used to house electrical connections and support wiring infrastructure. They offer stability and protection for both conduit and wiring assemblies in walls and ceilings.
  • Covers: Designed to seal conduit openings and protect internal wiring from dust and moisture. They are essential for safety, insulation, and code compliance in open junctions.
  • Weatherproof Boxes: Built to endure moisture, dirt, and corrosion in outdoor and damp locations. They are commonly used in exposed electrical systems, especially in residential and light commercial construction.

Shape:

  • Round: Typically used for lighting fixtures and ceiling fan boxes. Their curved design fits standard round electrical applications and promotes balanced weight distribution.
  • Square: Ideal for mounting switches and outlets, especially in drywall or masonry walls. Their boxy shape provides more internal space for wire connections and flexibility in installation.

At Supply Ontime, we offer reliable materials designed to meet your project’s needs. With same-day delivery across the Greater Los Angeles area, we make it easy to keep your projects on schedule. Order Electrical Boxes now and get them delivered today!

Electrical Boxes FAQ

Are weatherproof electrical boxes required in Los Angeles?

Weatherproof electrical boxes are required anywhere wiring is exposed outdoors in Los Angeles. For receptacles, extra-duty in-use covers are typically required to protect devices while cords are plugged in, helping boxes stay compliant and safe in wet or coastal conditions. Their job is to shield connections from rain, dust, and moisture, which is especially important in coastal areas where salt air accelerates corrosion. Common materials include heavy-duty PVC, polycarbonate, and die-cast metal, paired with gasketed “in-use” covers that keep devices protected even while cords are plugged in. Always follow the latest code and listing requirements for the specific location.

What sizes of electrical boxes are available for delivery in Los Angeles?

The sizes of electrical boxes available for delivery in Los Angeles span a wide range and are rated by volume (cubic inches) to ensure there is enough free space for conductors and devices. Common volumes include 18, 20, 22, and 25 cu in for single-gang boxes, with deeper or multi-gang options for added devices and conductor counts. Choosing the correct size prevents overcrowding, supports proper heat dissipation, and helps meet code fill calculations—especially important when adding GFCI/Smart switches or pigtails during remodels.

Frequently asked question

Yes, electrical boxes can be delivered the same day in Los Angeles. Supply Ontime offers fast drop-offs—often within a few hours when in stock—or you can book a scheduled two-hour window to match inspection times or crew starts. Delivery choices include Truck Bed Delivery, Curbside Delivery, and White Gloves Delivery (first-door placement), so materials reach homes, apartments, and active jobsites without disrupting the schedule.