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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 635579

Weatherproof Cover 1-Gang Duplex Outlet Metallic Gray

Precio original $5.73 - Precio original $5.73
Precio original
$5.73
$5.73 - $5.73
Precio actual $5.73
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About This Product Weatherproof duplex covers are intended to offer weatherproof protection for outdoor outlets. These covers feature a self-closin...

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SKU 247690

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

Precio original $16.88 - Precio original $16.88
Precio original
$16.88
$16.88 - $16.88
Precio actual $16.88
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About This Product Weatherproof enclosures are intended for branch circuit wiring in wet, damp, or dry environments. These boxes accommodate outlet...

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SKU 446942

Weatherproof In-Use Cover Metallic Deep Extra Duty 1-Gang Gray (12-in-1-Configurations)

Precio original $30.16 - Precio original $30.16
Precio original
$30.16
$30.16 - $30.16
Precio actual $30.16
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About This Product Metallic while-in-use device covers offer weatherproof protection for active outlets. These while-in-use covers are constructed ...

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SKU 459813

Weatherproof In-Use Cover Clear 1-Gang Deep Extra Duty Horizontal/Vertical Non-Metallic (16-in-1-Configurations)

Precio original $22.92 - Precio original $22.92
Precio original
$22.92
$22.92 - $22.92
Precio actual $22.92
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About This Product The non-metallic while-in-use device covers offer weatherproof protection when an outlet is in operation. These while-in-use cov...

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SKU 740887

Weatherproof Cover 1-Gang Blank Non-Metallic White

Precio original $4.40 - Precio original $4.40
Precio original
$4.40
$4.40 - $4.40
Precio actual $4.40
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About This Product PVC blank weatherproof covers are intended for wiring applications in wet, damp, or dry environments. These covers can also be u...

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SKU 629445

Weatherproof Cover 1-Gang Blank Non-Metallic Gray

Precio original $4.40 - Precio original $4.40
Precio original
$4.40
$4.40 - $4.40
Precio actual $4.40
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About This Product PVC blank weatherproof covers are intended for use in wiring applications in wet, damp, or dry environments. These covers can al...

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SKU 227729

Weatherproof Cover 1-Gang Blank Metallic White

Precio original $2.28 - Precio original $2.28
Precio original
$2.28
$2.28 - $2.28
Precio actual $2.28
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About This Product Blank covers are intended to offer weatherproof protection when a box is utilized for junction purposes. The blank covers attach...

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SKU 613395

Weatherproof Cover Blank 1-Gang Metallic Gray

Precio original $2.28 - Precio original $2.28
Precio original
$2.28
$2.28 - $2.28
Precio actual $2.28
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About This Product Blank covers are intended to offer weatherproof protection when a box is utilized for junction purposes. The blank covers attach...

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SKU 830454

Weatherproof Cover Metallic Blank 1-Gang Bronze

Precio original $2.28 - Precio original $2.28
Precio original
$2.28
$2.28 - $2.28
Precio actual $2.28
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About This Product Blank covers are intended to offer weatherproof protection when a box is utilized for junction purposes. The blank covers attach...

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SKU 402585

Handy Box Cover 1-Gang Blank (Gray)

Precio original $1.73 - Precio original $1.73
Precio original
$1.73
$1.73 - $1.73
Precio actual $1.73
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About This Product The Handy Box cover is designed to seal off an unused electrical box. This cover features a knockout that allows access to the b...

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SKU 141858

Electrical Switch and Outlet Box 8 cu. in. Shallow PVC New Work 1-Gang

Precio original $2.85 - Precio original $2.85
Precio original
$2.85
$2.85 - $2.85
Precio actual $2.85
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About This Product The 1-Gang 8 cu. in. Non-Metallic Switch and Outlet Box is ideal for light commercial and residential settings. It is constructe...

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SKU 615452

Electrical Switch and Outlet Box PVC Shallow Flanged Old Work 1-Gang 8 cu. in.

Precio original $2.97 - Precio original $2.97
Precio original
$2.97
$2.97 - $2.97
Precio actual $2.97
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About This Product The 1-Gang 8 cu. in. Old Work Flanged Shallow Box is intended for use with non-metallic sheathed cable as specified in article 3...

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SKU 576042

ENT Box Cover 1-Gang 5/8 in. PVC

Precio original $2.97 - Precio original $2.97
Precio original
$2.97
$2.97 - $2.97
Precio actual $2.97
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About This Product The 1-Gang Electrical Non-Metallic Tubing Box Extender is intended for compatibility with 1-Gang device installations. It is con...

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SKU 537954

Electrical Wall Box Metal New Work 1-Gang with Ground Bump 4 in.

Precio original $3.22 - Precio original $3.22
Precio original
$3.22
$3.22 - $3.22
Precio actual $3.22
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About This Product 1-Gang 4 in. New Work Metal Electrical Wall Box with Ground Bump. Metallic outlet boxes offer creative and effective solutions f...

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SKU 095554

Electrical Box Metal Square 4 in. 30.3 cu. in. 1-Gang.

Precio original $9.11 - Precio original $9.11
Precio original
$9.11
$9.11 - $9.11
Precio actual $9.11
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About This Product When setting up light switches or electrical outlets, utilize the 2-Gang 30 cu. in. square electrical box to contain the wiring ...

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SKU 319744

Electrical Ceiling Box PVC New Work Octagon 4 in. 20.5 cu. in. with L-Bracket 1-Gang

Precio original $4.58 - Precio original $4.58
Precio original
$4.58
$4.58 - $4.58
Precio actual $4.58
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About This Product The 1-Gang 20.5 cu. in. Octagon Electrical Ceiling Box featuring an L-bracket is constructed from a specially designed high heat...

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SKU 190540

Electrical Ceiling Box 4 in. x 20 cu. in. PVC New Work with Large Hanger Bar 1-Gang

Precio original $6.72 - Precio original $6.72
Precio original
$6.72
$6.72 - $6.72
Precio actual $6.72
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About This Product The 1-Gang 20 cu. in. New Work Ceiling Box featuring a Large Hanger Bar is constructed from non-metallic Polycarbonate, ensuring...

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SKU 163877

Handy Box 4 in. x 2-1/8 in. New Work Metal Deep with T-Bracket 1-Gang

Precio original $6.19 - Precio original $6.19
Precio original
$6.19
$6.19 - $6.19
Precio actual $6.19
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About This Product The 1-Gang 14.5 cu. in. Steel Handy Box offers additional wiring space for the installation of switches or outlets. This conveni...

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SKU 239148

Metal Utility Box 4 in. x 2-1/8 in. New Work 1-Gang

Precio original $4.92 - Precio original $4.92
Precio original
$4.92
$4.92 - $4.92
Precio actual $4.92
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About This Product represents the top-tier product range of metallic switch and outlet boxes utilized in electrical installations. Since 1904, thes...

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SKU 648735

Ceiling Box 4 cu. in. Round 1-Gang

Precio original $4.86 - Precio original $4.86
Precio original
$4.86
$4.86 - $4.86
Precio actual $4.86
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About This Product The 1-Gang 4 cu. in. Round Ceiling Box is made from pre-galvanized steel and has dimensions of 3-1/2 in. x 1/2 in. This ceiling ...

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SKU 111118

Electrical Box 1-Gang PVC New Work 30 cu. in.

Precio original $8.39 - Precio original $8.39
Precio original
$8.39
$8.39 - $8.39
Precio actual $8.39
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About This Product The 1-Gang New-Work Outlet Box is designed to serve as an outlet box for dryers in new construction projects. This outlet box is...

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SKU 910027

Switch Box 3 in. x 1-1/2 in. Non-Gangable Old Work 1-Gang

Precio original $4.95 - Precio original $4.95
Precio original
$4.95
$4.95 - $4.95
Precio actual $4.95
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About This Product Pre-galvanized steel non-gangable switch box, measuring 3 in. x 2 in. x 1-1/2 in., with a capacity of 7.5 cubic inches. It featu...

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SKU 047052

Electrical Box PVC New Work 1-Gang 22 cu. in. ENT

Precio original $7.16 - Precio original $7.16
Precio original
$7.16
$7.16 - $7.16
Precio actual $7.16
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About This Product The Single-Gang box is intended for use with electrical non-metallic tubing. This 22 cu. in. box, which is the largest capacity ...

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SKU 794664

Electrical Box 22 cu. in. Horizontal New Work PVC 1-Gang with Adjustable Bracket

Precio original $6.30 - Precio original $6.30
Precio original
$6.30
$6.30 - $6.30
Precio actual $6.30
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About This Product The Horizontal 21 cu. in. PVC 1-Gang Wall Box Adjust-a-box with Adjustable Bracket for Horizontal Mount is created to enable dep...

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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.