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

Electrical Boxes

Filtros

SKU 415679

Weatherproof Cover 1-Gang Industrial Grade for Flanged Devices Gray

Precio original $18.34 - Precio original $18.34
Precio original
$18.34
$18.34 - $18.34
Precio actual $18.34
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About This Product Compatible with 3-, 4-, or 5-Wire 20 Amp and 30 Amp Locking Flanged Inlets or Outlets. Typical uses for industrial-grade weather...

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SKU 713076

Electrical Box for Wood Sub-Flooring with 15A TR Duplex Receptacle Brass Floor Box Kit with Screw Caps

Precio original $48.30 - Precio original $48.30
Precio original
$48.30
$48.30 - $48.30
Precio actual $48.30
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About This Product Choose durable, secure, and discreet floor box outlets that enhance your flooring selection. Our electrical box is constructed f...

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SKU 670047

Electrical Switch and Outlet Box 34 cu. in. Gray Old Work Residential 2-Gang Heavy Wall with EZ Mount Clamps EZ Box

Precio original $9.75 - Precio original $9.75
Precio original
$9.75
$9.75 - $9.75
Precio actual $9.75
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About This Product Install dependable new electrical outlet boxes and switch boxes quickly and easily with our Heavy Wall Electrical Outlet Box and...

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SKU 545131

Ceiling Box Cover

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 Ceiling Box Cover designed for covering unused 3-1/2 in. and 4 in. round and octagonal boxes before installing a fan or fixture....

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SKU 960940

Handy Box Cover Metallic Blank with 1/2 in. Knockout

Precio original $2.15 - Precio original $2.15
Precio original
$2.15
$2.15 - $2.15
Precio actual $2.15
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About This Product The 1-Gang Blank Utility Box Cover shields an electrical box, safeguarding the components within. This cover features a 1/2 inch...

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SKU 077806

Junction Box 8 in. x 8 in. x 4 in.

Precio original $49.97 - Precio original $49.97
Precio original
$49.97
$49.97 - $49.97
Precio actual $49.97
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About This Product The 8-inch Junction Box is a conveniently accessible surface-mounted PVC enclosure without entry hubs, designed to accommodate m...

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SKU 370832

Indoor Screw Cover Wall Mount Box NEMA 1 Carbon Steel 8 in. W x 8 in. H x 4 in. D 1-Pack

Precio original $42.08 - Precio original $42.08
Precio original
$42.08
$42.08 - $42.08
Precio actual $42.08
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About This Product The Indoor Screw cover is intended for use as a junction and wiring box. Constructed from steel, it offers durability. The sides...

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SKU 105521

Electrical Ceiling Box PVC Shallow New Work 8 cu. in.

Precio original $8.91 - Precio original $8.91
Precio original
$8.91
$8.91 - $8.91
Precio actual $8.91
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About This Product The 1-Gang 8 cu. in. Ceiling Fan Outlet Box is a premium box crafted to support indoor fixtures in both residential and light co...

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SKU 197307

Junction Box 6 in. x 6 in. x 4 in.

Precio original $25.76 - Precio original $25.76
Precio original
$25.76
$25.76 - $25.76
Precio actual $25.76
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About This Product The 6 in. x 6 in. x 4 in. Junction Box is a surface-mounted PVC box that is easy to access and lacks entrance hubs. This box acc...

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SKU 540737

Outdoor Screw Cover Wall Mount Box NEMA 3R Carbon Steel 6 in. W x 6 in. H x 4 in. D 1-Pack

Precio original $51.27 - Precio original $51.27
Precio original
$51.27
$51.27 - $51.27
Precio actual $51.27
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About This Product The Indoor Screw cover is intended for use as a junction and wiring box. It is constructed from 16-gauge steel for strength. It ...

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SKU 349191

Indoor Wall Mount Box NEMA 1 Carbon Steel Screw Cover 6 in. W x 6 in. H x 4 in. D 1-Pack

Precio original $32.07 - Precio original $32.07
Precio original
$32.07
$32.07 - $32.07
Precio actual $32.07
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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. It features ...

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SKU 898895

Electrical Switch and Outlet Box PVC Old Work 4-Gang 71 cu. in.

Precio original $16.82 - Precio original $16.82
Precio original
$16.82
$16.82 - $16.82
Precio actual $16.82
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About This Product The Zip Box 4-Gang 71 cu. in. Old Work Non-Metallic Switch and Outlet Box is intended for use with non-metallic sheathed cable, ...

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SKU 597917

Electrical Switch and Outlet Box 60 cu. in. PVC New Work 4-Gang

Precio original $11.48 - Precio original $11.48
Precio original
$11.48
$11.48 - $11.48
Precio actual $11.48
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About This Product The 4-Gang 55 cu. in. Old Work Non-Metallic Switch and Outlet Box is intended for use with non-metallic sheathed cable, complyin...

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SKU 733018

Junction Box 4 in. x 4 in. x 4 in.

Precio original $21.53 - Precio original $21.53
Precio original
$21.53
$21.53 - $21.53
Precio actual $21.53
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About This Product Enhance your electrical setups with PVC junction boxes. These conduit fittings are crafted from high-quality PVC, offering outst...

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SKU 622320

Junction Box 4 in. x 4 in. x 2 in.

Precio original $14.93 - Precio original $14.93
Precio original
$14.93
$14.93 - $14.93
Precio actual $14.93
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About This Product A surface-mounted enclosure without entrance hubs allows multiple conduits to be attached, and wire splices to be made within, p...

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SKU 953305

Octagon Box 4 in. x 2-1/8 in. Deep with 1/2 in. and 3/4 in. Knockouts

Precio original $4.96 - Precio original $4.96
Precio original
$4.96
$4.96 - $4.96
Precio actual $4.96
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About This Product This 4-inch Octagon Box comes with 9 knockouts available in both 1/2-inch and 3/4-inch sizes. Constructed from steel, the box is...

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SKU 543506

Electrical Box 4 in. x 1-1/2 in. 2-Gang Square Steel

Precio original $3.35 - Precio original $3.35
Precio original
$3.35
$3.35 - $3.35
Precio actual $3.35
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About This Product Switch and outlet boxes, along with all their accessories, are safeguarded against rust and corrosion through zinc galvanization...

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SKU 653712

Ceiling Box Cover White Non-Metallic Round Blank 4 in.

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 The Circular Ceiling Box Cover is intended to conceal ceiling boxes when they are not being utilized. Constructed with PVC, it i...

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SKU 131158

Steel Utility Box 4 in.

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 This single-gang utility box is ideal for indoor electrical applications. Constructed from steel for long-lasting use, it includ...

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SKU 463190

Steel Square Box 4 in. with SV Bracket

Precio original $2.59 - Precio original $2.59
Precio original
$2.59
$2.59 - $2.59
Precio actual $2.59
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About This Product Wiring for electrical devices is securely housed and shielded within the 2-Gang 30 cu. in. Square Electrical Box. This box can b...

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SKU 873958

Steel Metallic Box Cover 4 in. Square for Double Duplex

Precio original $1.86 - Precio original $1.86
Precio original
$1.86
$1.86 - $1.86
Precio actual $1.86
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About This Product The Octagon Electrical Box Cover is designed to close off a 4-inch box, safeguarding the wiring elements within. This cover is m...

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SKU 056587

Steel Metallic Box Cover 4 in. Square for 2 GFCI Receptacles

Precio original $6.05 - Precio original $6.05
Precio original
$6.05
$6.05 - $6.05
Precio actual $6.05
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About This Product Protect GFCI outlets using this 2-Gang GFCI Cover. Ideal for indoor use, it is constructed from galvanized steel for long-lastin...

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SKU 788071

Mud Ring Square 4 in.

Precio original $2.59 - Precio original $2.59
Precio original
$2.59
$2.59 - $2.59
Precio actual $2.59
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About This Product Attach the Mud Ring to give an electrical box an additional 1/2 inch of height for flush covering. This mud ring is corrosion-re...

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SKU 829282

Metal Box 4 in. Square with Bracket

Precio original $3.23 - Precio original $3.23
Precio original
$3.23
$3.23 - $3.23
Precio actual $3.23
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About This Product The 2-Gang Square Electrical Box is mounted to a wall stud on the side to accommodate electrical switch and receptacle wiring. T...

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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.