









⚡ Elevate your electrical game with the box that means business!
The Southwire MSB1G One Gang Device Box combines heavy-duty 42 lb mounting screws, extra thick PVC walls, and a depth-adjustable design to deliver superior stability and a perfect fit on wood or metal studs. UL Classified for fire safety and featuring threaded device holes plus built-in wire clamps, this box is engineered for professional-grade reliability and ease of installation.




| ASIN | B00H8NUVRO |
| Best Sellers Rank | #2,040 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #3 in Electrical Outlet Boxes |
| Brand Name | Southwire |
| Capacity | 38 Cubic Inches |
| Color | Gray |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,701) |
| Finish Type | Unfinished |
| Global Trade Identification Number | 00784297017643 |
| Included Components | MSB2G |
| Installation Type | installation_type |
| Item Dimensions D x W x H | 3.82"D x 3.4"W x 4.2"H |
| Item Type Name | 2-GANG PVC ELECTRICAL BOX |
| Item Weight | 0.01 Ounces |
| Manufacturer | Southwire |
| Material | Polyvinyl Chloride |
| Model Number | MSB1G |
| Specification Met | Ul |
| Style | Original |
| UPC | 784297017643 |
| Unit Count | 1.0 Count |
W**R
These are the best for old work.
I have been a commercial electrician for many years doing mostly large commercial jobs (Hotels, Cell store conversions from grocery stores, etc.). I am now an estimator but do a lot of electrical for family, church, and inspect commercial jobs for the construction company that I work for. Southwire was picked up by Lowes several years ago and they had some problems with defective products that were recalled (mostly digital meters/testers). Well Lowes got rid of them and went with Klein and Home Depot greatly reduced their Klein and now have Milwaukee. That being said, you wonder how such a great box came from Southwire! Well, Southwire bought Madision Electrical and now if you look up that 2 gang box under Madison....it looks EXACTLY the same...HMMMMM? This box is about $2 cheaper than the Madison brand. What makes this box so good is: 1) Quality - this is a very sturdy and thick PVC box. 2) Being sturdier, the device 6/32 mounting holes are much more durable (why you should NEVER use a fiberglass box!). 3) The two angled screws are designed to end up a bit recessed so that a short won't make contact with one of those screws. That would be bad as the current would not be going to ground to trip the breaker, but through a screw which turns into a cal rod inside your stud - yes, that would be VERY bad! 4) Those screws hold that box very tightly against the stud and thereby makes the box stable when plugging or unplugging a plug from the outlets. My daughter's house needed some upgrades and these boxes make the job easy. Easy to take a 1 gang box and replace it with a 2 gang box like this without having to cut the walls open other and enlarging for the box size. The NM clamps will need to be pre-opened with a fairly large flat-blade screwdriver - What you had on the other side! Don't pay any attention to the 10, 12 and 14 embossing on the back...each one of those openings/clamps are the exact same size! Not sure what they were thinking there. Update: I find that before installing, grab the box carefully without your hand being near the soon to be protruding screws and use a drill driver to spin the screws in reverse while pushing will pilot the holes and when you actually go to screw it in it will not want to wander further into the wall since you will have virtually no resistance before the screws tips bite into the wall stud.
D**D
Sturdy and Adjustable Two Gang Device Box
I recently used the Southwire Two Gang Device Box for a home wiring project, and it did not disappoint. The adjustable depth feature was incredibly handy, allowing me to fit the box perfectly into the wall without any hassle. The construction is impressively sturdy, which gave me confidence that it would hold up well over time, even with heavy-duty use. It's also very accommodating for different types of wiring, making the installation process much smoother. One thing I particularly liked was how secure the box felt once installed. It didn’t wobble or shift, which is a big plus when you’re dealing with electrical components. The gray color blended nicely with the rest of the installation, maintaining a neat appearance. If I had to point out a small drawback, it would be that the adjustment screws could be a bit more accessible, but this is a minor issue given the overall quality. For anyone tackling a similar project, this device box is a reliable choice.
S**K
Outstanding Product
The product quality is consistently outstanding, exceeding my expectations every time.
P**C
Very strong and super simple to attach boxes. One minor complaint
These are very strong rigid plastic boxes. They are thicker than the regular blue plastic boxes you see at the home center. The screws do a great job securing it to the stud. My only complaint is the little tabs/locks you need to pry open to run the wires into the box. I assume there is some trick to using them I am not aware of. Lots of prying and wrestling with them to get the wires in. With that said, I was able to get them during the COVID pandemic, and I was able to complete one of my many quarantine projects. Very happy with the results.
A**8
Electrical wall pass through project
Single Product Review: Madison new/old work boxes Discussion: These boxes are the best for outlets/electrical boxes which require structural strength. As these were going to house outlets, which I planned on plugging/unplugging often, I wanted extra strenth, especially the 2-gang holding both the twist lock plug (NEMA L5-15P), and a switch. These were easy to mount, using the included screws. Cut the dry wall a little on the tigher side, so that it will hold the box in place as it is screwed to the wall stud. Project Summary: I have a temporary solar/PV battery backup project in the garage, and I wanted to use the generated solar power inside the house. Previously has an extension cord running through the door to the garage, but that's not safe for a lot of reasons, so I wired up a couple of electrical boxes, and wired in a cut-out switch. The inside connections are a standard wall outlet, and the outside connection to the inverter is via a twist lock plug, for extra security. Project Recommendations: 1) I looked at a lot of generator inlet receptacles, but most were 20-30 amp, and I don't need that large (standard 15A), so I used a NEMA locking L5-15P instead. 2) As this was going to be a twist lock plug, I wanted to attach the electrical box to a stud if at all possible (vs. using the electrical box which clamps onto dry-wall). The Madison Electric Products boxes were perfect. I used a single gang on the inside box, and for the outside, I used a 2-gang so that I could also fit a cut-off switch. I mounted the 2-gang box rotated 90 degrees to the normal orientation for two reasons: a) I could screw it directly into the horitzontal stud, and b) I could mount the plug on the bottom, and the switch on the top. 3) When it comes to electrical parts, I generally go with Leviton, which I have had great success with. The only item I got that was a different brand was the right angle plug (which Leviton also offers, I just didn't see it when placing the order, otherwise I would have ordered that one instead). Conclusion: All the products listed in the review, and used for this project I am rating 5-stars. Related Products: ELECTRICAL WIRING (INSIDE) Madison Electric Products MSB1G One Gang Device Box ~ $2 https://www.amazon.com/gp/product/B00H8NUVQK Leviton 8300-R 20-Amp, 125-Volt, Extra Heavy Duty Hospital Grade ~ $9 https://www.amazon.com/gp/product/B002090BBC Leviton 80703-ORG 1-Gang Duplex Device ~ $2 https://www.amazon.com/gp/product/B000U39XFU APC Wall Outlet Multi Plug Extender, P6W, (6) AC Multi Plug Outlet ~ $11 https://www.amazon.com/gp/product/B0046BGUWG ELECTRICAL WIRING (OUTSIDE) Madison Electric Products MSB2G Two Gang ~ $4 https://www.amazon.com/gp/product/B00H8NUVRO Leviton 4710 15 Amp, 125 Volt, L5-15R, 2P, 3W, Single Locking Receptacle ~ $13 https://www.amazon.com/gp/product/B000LNKO1G Leviton 1221-2W 20-Amp, 120/277-Volt, Toggle Single-Pole AC Quiet Switch ~ $6 https://www.amazon.com/gp/product/B002MPPTAC Leviton 84007 2-Gang 1-Toggle 1-Single 1.406-Inch Diameter ~ $8 https://www.amazon.com/gp/product/B000U3G2AE ELECTRICAL WIRING (CABLES/CORDS/PLUGS) Right angled Nema L5-15P 15 Amp 125V 2 Pole 3 Wire ~ $16 https://www.amazon.com/gp/product/B087FFK2LK Leviton 515CV Commercial Grade Straight Blade (FEMALE) ~ $6 https://www.amazon.com/gp/product/B000H5WHMW Leviton 5256-VY 15 Amp, 125 Volt, Industrial Grade (MALE) ~ $9 https://www.amazon.com/gp/product/B00009W3A8
B**M
This box is perfect for replacing a single gang box with a double
A**.
Very bad
E**O
Perfecto para carga de Tesla, solo pone pastilla de 50 A y con eso puedes cargar tu Tesla en México Es el complemento de la clavija
D**R
Easy installation and heavy duty
C**S
Sturdy construction, not pliable and flimsy. Easy to use, nice roomy space to tuck all the wires into. Good quality.
Trustpilot
2 weeks ago
2 weeks ago