






Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.
Desertcart purchases this item on your behalf and handles shipping, customs, and support to Thailand.
⚡ Power your projects with weatherproof precision!
The SIGMA ENGINEERED SOLUTIONS 143854 Round Metal Electrical Outlet Box offers a spacious 16 cubic inch capacity with five 1/2-inch knockouts, crafted from powder-coated die-cast metal for superior corrosion resistance. Rated NEMA 3R and UL/CSA certified, it ensures safe, reliable use in wet locations. Designed for easy mounting with included hardware and a pre-installed ground screw, this white outlet box combines durability, versatility, and professional-grade quality for all your electrical installation needs.











| ASIN | B00C3YD6HU |
| Best Sellers Rank | #78,832 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #177 in Electrical Boxes |
| Brand | Sigma Engineered Solutions |
| Brand Name | Sigma Engineered Solutions |
| Capacity | 16 Cubic Inches |
| Color | White |
| Customer Reviews | 4.7 out of 5 stars 1,795 Reviews |
| Finish Type | Powder Coated |
| Global Trade Identification Number | 00031857643850 |
| Included Components | Sigma Engineered Solutions |
| Installation Type | Screw-In |
| Item Dimensions D x W x H | 2.26"D x 5.5"W x 4.2"H |
| Item Type Name | Sigma Engineered Solutions, White Sigma Electric 143854WH 1/2-Inch 5 Hole Round Box |
| Item Weight | 8 ounces |
| Manufacturer | Sigma Engineered Solutions |
| Material | Metal |
| Model Number | b5b4dfb4-09e3-40da-b716-f01bcab2f649 |
| Part Number | 143854WH |
| Product Dimensions | 2.26"D x 5.5"W x 4.2"H |
| Specification Met | Csa, Nema 3r, Ul |
| Style | Compact |
| UPC | 031857643850 |
| Unit Count | 1.0 Count |
| Warranty Description | Warranty |
J**S
Great for outdoor motion lighting
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.
M**C
Great value for money better then hardware store options
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.
D**D
Sturdy and Reliable for DIY Projects
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.
A**R
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.
J**D
lasting years, exterior application
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.
G**N
Great quality.
Absolutely a life saver for mounting my Ring floodlight installation on brick surface. It is of excellent quality
K**M
Solid build, Easy install, lots of options.
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. : )
J**N
Value
Works well
H**N
Great quality, easy to fit!
Really great quality product! I purchased this to mount a Ring Floodlight Camera on the side of my house for the drive. It was really easy to mount and provided a level surface for the ring camera to mount on. The box itself is really high quality metal and feels very sturdy in the hand. Very easy to install aswell and really liked the built in earth screw which made it very easy to wire everything up.
B**D
All weather Electrical Box.
High quality, perfect for outdoor use.
T**K
Perfect...
…for creating a surface mounted damp proof wired 120V motion activated LED floodlight.
S**N
Does the job
Well built and easy to fit for outdoor use. Was prefect fit to mount a Reolink Elite Floodlight camera too after other junction boxes weren't suitable. Requires a suitable gland for any cables, but supplies blanking plugs for unused entry points
S**R
Don't overpay
This box has no cover, no screws to attach it to anything and the bolts they provided are not painted, also are to short! After finding the right size and painting them I still needed to find screws to attach it to the wall.
Trustpilot
1 month ago
2 weeks ago