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Sigma Engineered Solutions

SIGMA ENGINEERED SOLUTIONS 143854 Round Metal Electrical Outlet Box, Weatherproof, Easy Mount, White, (5) 1/2-Inch Holes

  • Based on 1,808 reviews
Condition: New
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Availability: In Stock.
Fulfilled by MaxWarehouse
Arrives Wednesday, Jul 1
Order within 19 hours and 21 minutes
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Features

  • Features five 1/2-in knockouts and 16 cu. in. capacity
  • Fits standard 4-in round weatherproof box covers (with 4.1885-in diameter)
  • Provide a junction for conduits or can be used to mount lampholders and lighting systems
  • Die-cast construction and powder coated for corrosion resistance and includes a pre-installed ground screw and closure plugs
  • Product is UL and CSA listed, suitable for wet locations and NEMA 3R rated

Description

Sigma Engineered Solutions weatherproof round box provides a junction for conduits and can be used to mount lampholders and lighting systems. The rugged, die-cast construction prevents moisture penetration making the box suitable for wet, damp or dry locations. The box is powder coated for corrosion resistance and features a ground screw for secure installation. Boxes include hardware, closure plugs and pre-installed ground screw. Product is UL and CSA listed.

Material: Metal


Brand: Sigma Engineered Solutions


Color: White


Style: Compact


Product Dimensions: 2.26"D x 5.5"W x 4.2"H


Brand Name: Sigma Engineered Solutions


Model Number: b5b4dfb4-09e3-40da-b716-f01bcab2f649


Manufacturer: Sigma Engineered Solutions


Warranty Description: Warranty


UPC: 031857643850


Global Trade Identification Number: 50


Part Number: 143854WH


Included Components: Sigma Engineered Solutions


Item Type Name: Sigma Engineered Solutions, White Sigma Electric 143854WH 1/2-Inch 5 Hole Round Box


Unit Count: 1.0 Count


Color: White


Style: Compact


Finish Type: Powder Coated


Installation Type: Screw-In


Specification Met: Csa, Nema 3r, Ul


Item Dimensions D x W x H: 2.26"D x 5.5"W x 4.2"H


Item Weight: 8 ounces


Material: Metal


Capacity: 16 Cubic Inches


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jul 1

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Great for outdoor motion lighting
Size: 1 Count (Pack of 1)
Great box that mounts directly on house, it comes with plugs for holes that aren’t used making it weather proof, perfect fit for motion lights, I installed box and light in 15 minutes.
Reviewed in the United States on January 8, 2026 by James
    • Sturdy and Reliable for DIY Projects
Size: 1 Count (Pack of 1)
I've been using this for my recent electrical DIY project, and it's been a solid choice. The material feels robust and dependable, which is exactly what I need when tackling home improvements. One thing I really like is how easy it is to work with. The five-hole design provides ample flexibility for different wiring configurations, making my task much simpler. It also has a clean, white finish that blends well with my home's interior, a small detail but one that adds a professional touch to the work. The only minor downside is that the paint can chip if you're not careful during installation. However, this is easily avoidable with a bit of caution. As someone who enjoys taking on DIY projects, I find this round box to be an excellent addition to my toolkit. It holds up well under various conditions and simplifies the wiring process significantly. ... show more
Reviewed in the United States on July 16, 2024 by dragonlord
    • Great value for money better then hardware store options
Size: 1 Count (Pack of 1)
Heavy metal great quality gave everything needed for installation. My light fixture fit perfectly and I like the white matches. Would recommend to anyway way better then hardware store options. I used it on wood stud but I’m sure it’s versatile.
Reviewed in the United States on December 18, 2025 by Mike c
    • Well-made metal round boxes — clean finish and solid fit
These Sigma Electric 1/2-inch 5-hole round boxes are solid, well-constructed metal boxes that work exactly as intended. The white finish is clean and even, with no sharp edges or defects, and the knockouts are placed well for flexible wiring configurations. The boxes feel sturdy and durable, suitable for typical residential or light commercial electrical applications. Threads and knockouts are clean, making installation straightforward, and the pack of two is convenient for small projects without overbuying. I’m giving four stars instead of five only because these are straightforward electrical boxes — nothing flashy, just reliable hardware that does the job. If you need dependable round boxes with multiple knockout options, these are a good choice. ... show more
Reviewed in the United States on December 22, 2025 by Amazon Reviewer
    • Good Quality
Size: 1 Count (Pack of 1)
Easy setup for my wiring.
Reviewed in the United States on May 29, 2026 by William Turnbough
    • lasting years, exterior application
Size: 1 Count (Pack of 1)
This is a quality electrical appliance box. I mounted this on a semi protected exterior wall. I have a flood light installed on it. It has been there for 2 years, at least, and the light is still working like new. The light fixture fits well on the box.
Reviewed in the United States on September 6, 2025 by JB Kid
    • Solid build, Easy install, lots of options.
Size: 1 Count (Pack of 1)
Didn't realize the flood lights I ordered weren't going to mount on a deck without a box, so I quickly settled on these. Pros: * Looks great, feels very sturdy. * No sharp edges, & White is way better looking than bare metal. * Great size, with plenty of room inside to store wires & wire-nuts. * Fit my fixture, & fits at least 2 fixture sizes, as there are 2 sets of screw sockets to choose from. * Easy to mount to outside wall, or deck. No need to cut a hole to recess it into. Yay! * Plenty of choices on how to feed the wire in, & out, if need be. 4 threaded side holes, & 1 Back hole, with 4 little screw in plugs to keep critters & the weather out, when not in use. Cons: * None for me, but if you need it to go into a recessed hole, this is probably not the one to choose. The mounting tabs will surely get in your way. You may think there's not much difference between one electrical box and another, but there really is. This one is very nice compared to all others I've used. (a Lot). That coating is way nicer to your hands, too. No sharp edges on mine. Thanks designers. : ) ... show more
Reviewed in the United States on October 24, 2023 by KM
    • High quality outdoor electrical box
Size: 1 Count (Pack of 1)
Perfect for mounting outside floodlights or cameras. Price is much better than both of the big box stores in my area. High quality at a reasonable cost.
Reviewed in the United States on July 31, 2025 by Dana H

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