

🔧 Elevate your electrical game with the box that means business!
The Southwire MSB1G One Gang Device Box features heavy-duty 42 lb mounting screws, adjustable depth for versatile installation, and extra thick PVC walls for enhanced stability. UL listed and crafted for both wood and metal studs, this device box combines durability with professional-grade reliability, making it a must-have for any serious electrical project.




| Brand | Southwire |
| Color | Gray |
| Finish Type | Unfinished |
| Material | Polyvinyl Chloride |
| Product Dimensions | 3.82"D x 3.4"W x 4.2"H |
| Style | Original |
D**L
Great product
Absolutely love these. Easy to install and extremely sturdy. Can’t find anything close to this in stores.
M**R
Great well made product.
This is a must-have tool. Very clever and well-thought-out design. It worked perfectly for cutting the opening for a light fixture and made the job quick and clean. The plastic guide pieces are especially smart—I only wish it were possible to order those separately and reuse the saw, because that would make this even better. Overall, this is a great product and absolutely worth it. Highly recommend.
L**N
Solid 4-gang box. Perfect for stud mount.
Perfectly placed mounting screws. Deep box, plenty of room for everything 4 circuits would need. Correct, industry standard hole sizes for receptacles/switches. Thick material.
S**N
Shop Apartment Project - Great Boxes for Heavy Duty Use
I recently purchased a small shop to work on cars in. The shop is about 45 minutes from my house, so I wanted to add in a little apartment in the event I decided to work late. The existing shop had boxes that I have been using inside the living area, but I needed stronger boxes for the shop. That is where these come in. Pros: - Durability: These things are quality boxes. The difference between these and the blue, nail in kind is like night and day. These will hold up very well in a shop environment. - Ease of Use in Tight Spaces: Unlike the nail in type where you need sapce to hammer in the nails, these can fit in existing walls very easily. Just cut the drywall (or whatever material you have for your wall) slightly smaller than the box so it holds it in place, then screw it into the stud. - Marked location for wires: The wire pass throughs are marked for 12 or 14 guage wire, with an offset for each. Not something necessary, but it was a nice touch. Cons: - I found it difficult to get the box to stay in place while I screwed it in. The screws want to pull the box back. When trying to use these on open walls, you'll need to really hold it in place. It would be nice to have a set of teeth on the side against the stud to hold it in place. - Pass-throughs: These are the kind that you can press a wire in and have it lock in place. This is nice to keep it in while you are wiring, but I'm not a fan of these. They are hard to use and even harder to push excess length back in. They were also very hard to snap off if you wanted to remove them - Price: If these are not on sale or marked down, the $9 price is a pricier than going with the hammer on style. I got mine at around$2.50 ea, which was good pricing. This is also true if you are not needing anything too strong. - Useage: These are made for wood studs. If you need something that attaches to other material or do not have access to the stud, these are not for you. For my shop project, these work great! I know these are strong enough to withstand the constant use and potential hits that you find in a shop environment without breaking. I'd probably use these for walls that I'd have to cut sheetrock as well. This is a good buy in my opinion.
A**R
Fan rated beefiness
These are amazing for knpcking out old bakelite round boxes and replacing them with something beefier. Much beefier. Super easy to install with impact. Everythings gotta be fan rated these days
C**S
Perfect replacement for old work
I had an existing old plastic box shatter and needed a replacement that could fit within the existing hole in the ceiling. This box was excellent quality, the screws were a little difficult to drill into the joist but the end result was excellent. No trimming of the existing hole was necessary.
L**E
Good existing work electrical box
Sturdier mount than other surface mount boxes I have used -- just need to be next to a stud -- much much better for outlets. Some internal space given up for the mounting, but I will definitely use these again for existing work additions.
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