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The SIGMA ENGINEERED SOLUTIONS 143854 is a compact, white, round metal electrical outlet box featuring five 1/2-inch knockouts and 16 cubic inches capacity. Designed for wet, damp, or dry locations, it boasts a powder-coated, die-cast metal construction for corrosion resistance and includes closure plugs and a pre-installed ground screw. UL and CSA listed with a NEMA 3R rating, it fits standard 4-inch round weatherproof covers, making it a versatile, durable choice for both indoor and outdoor electrical installations.

| ASIN | B00C3YD6HU |
| Best Sellers Rank | #16,591 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #45 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 1,833 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 |
| Number of Items | 1 |
| Number of Packs | 1 |
| 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 Count |
| Warranty Description | Warranty |
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.
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. : )
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.
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.
W**H
Good Quality
Easy setup for my wiring.
D**P
Fair market value.
They worked very well for I bought them for. I used them for mounting outdoor motion lights.
S**E
Good boxes for flood lights
Am renovating an old farmhouse and changing out the sets of flood lights they had that are very old for new LED units. Discovered the old lights only were mounted directly to the house and not to a box. The new lights require a mounting box so used these for the backing of the lights. My lights are all white so these blend in perfectly being white. They installed easily and are solid aluminum and sturdy. I am happy with the purchase.
H**4
Well made
Well made. Works as expected. Replaced a 30 year old junction box of the same type. The old one was starting to wear. Mainly the paint was chipping away. Looked ugly. I also needed to replace a broken led spotlight fixture. I did both at the same time. This junction box was a direct bolt on. No mods needed. I didn't use the supplied screws. I had to use longer outdoor rated course thread type screws for my application. I wouldn't leave a negative review for the hardware issue because every house and every application is going to be different. They supply a basic set of screws as a courtesy. Use your judgement to decide what screws are needed to install.
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 week ago
1 day ago