Southwire Southwire MSB1G One Gang Device Box with Depth Adjustable; Heavy Duty 42lb; Gray
Condition: New
$4.20
Holiday Deal
· 89% off
was $39.99
Buy Now, Pay Later
As low as
$1
/ mo
Learn more
- – 4-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
This item is eligible for return within 30 days of receipt
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Tuesday, Nov 17
Recently Viewed
At a glance
- Condition
- New
- Size
- 1 Gang
- Style
- Original
- Model
- MSB1G
- Capacity
- 18.5 cubic in
- Dimensions
- 30"D x 8"W x 6"H
- Weight
- 4 oz
- In the box
- MSB1G
- Warranty
- 1 Year
Features 6
- Heavy-Duty One-Piece Construction for Lasting Stability: Built with thick-wall molded PVC, this SmartBox offers superior rigidity and durability, making it ideal for residential and light commercial installations.
- Secure Wire Entry with Top and Bottom Clamps: Wire entrance clamps located on both the top and bottom of the box ensure secure cable management and easy access during installation.
- Versatile Mounting on Wood or Metal Studs: Designed to mount directly to wood or 25-gauge metal studs, this box adapts to new work or old work applications with ease.
- UL Classified for 2-Hour Fire-Rated Walls: Provides peace of mind with UL classification for 2-hour fire-rated wall assemblies (excluding MSB4G), meeting safety standards for code compliance.
- Includes Threaded Device Holes and Mounting Screws: Comes ready to install with 6-32 threaded device holes and 42 lb. mounting screws for a secure, professional-grade setup.
- Smart Box
Description
Upgrade your electrical installations with the Southwire Romex Smart Box. Designed for durability and ease, this device box features depth-adjustable mounting, extra-thick PVC walls for enhanced stability, and heavy-duty 42 lb screws for secure attachment to wood or metal studs. UL Listed for safety and reliability, it’s ideal for rough electrical setups in residential or commercial environments. Whether you're working on new construction or retrofits, this box delivers rigid support and flexible installation. Visitto learn more.
Specs 21
| Material | Polyvinyl Chloride |
|---|---|
| Brand | Southwire |
| Color | Gray |
| Style | Original |
| Product Dimensions | 30"D x 8"W x 6"H |
| Brand Name | Southwire |
| Model Number | MSB1G |
| Number of Packs | 1 |
| Manufacturer | Southwire |
| Number of Items | 1 |
| Unit Count | 1 Count |
| UPC | 784297017629 |
| Global Trade Identification Number | 29 |
| Item Type Name | 1-GANG PVC ELECTRICAL BOX |
| Part Number | MSB1G |
| Finish Type | Gray |
| Installation Type | Wall Mount |
| Specification Met | Ul |
| Item Dimensions D x W x H | 30"D x 8"W x 6"H |
| Item Weight | 4 ounces |
| Capacity | 18.5 cubic inches |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Nov 17
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- Zip Pay in 4
- Financing through Apple Pay
- Financing through Google Pay
Learn more about financing & leasing here.
Top Amazon Reviews
Great choice for a niche old/new work box need
This worked perfect for my application. I was installing wiring for an over the range microwave where one didn't exist before. I wanted a clean outlet installation where the outlet was in the back of my cabinet above the range, but needed the box to extend out from the drywall behind it by 1/2" to fit through the cutout behind my cabinet so the outlet would be flush with it. I had a stud to be able to screw into, but the 'new work' boxes from big box stores don't work that way, and to install a new work one to do what I want would've required me to rip out drywall to be able to nail it in. This box worked perfectly because it screws in from screws inside the box and worked perfectly for what I needed! This would also be a great replacement for any old 'new work' box you need to replace if they're next to a stud.
...
show more
Reviewed in the United States on June 13, 2023 by Michael Ponce
Arrived on time and as advertised
This box is sturdy and *almost* perfect for what I needed. However, the three provided mounting screws make it nearly impossible to mount the box perfectly flush to the truss (it sticks out about a 1/4"). Additionally, the provided studs for mounting the fan are great -- *if* your fan requires studs. If your mounting method requires screws, there is no way to remove the studs and replace them with screws like other products. As a result, I was unable to actually use these in the end and had to get another product to better suit my needs.
...
show more
Reviewed in the United States on July 8, 2023 by Bob S.
Southwire Remodel Box
I started using Southwire's remodel box and have been very pleased. I used to use a blue remodel box that had ears on it and held the box to the drywall. While those boxes worked okay, I find the Southwire remodel boxes a bit more superior. The Southwire boxes install next to a stud or blocking and screw into the stud or blocking. The attachment to the stub makes the box very secure. The Southwire remodel boxes have always had enough room for my wire count.
...
show more
Reviewed in the United States on July 5, 2023 by Colorado Rat
Excellent as an old work box, also great as a new work box
These are great for old work. Much much better than the ones with the screw tabs. They just need to located by a stud. Very sturdy and don't depend on the drywall for structural sturdiness. Two cons, 1) they are pricey, and 2) the shape sometimes gets in the way of the wire while inserting into the wall.
...
show more
Reviewed in the United States on July 3, 2023 by RalphKW
Difficult to get driver to stay on the screws.
I thought this would make installation easier by screwing instead of driving nails. Found it difficult to keep the bit engaged in the screw. I did get them installed.
Reviewed in the United States on July 10, 2023 by ironmke
Pretty great with one flaw
For something they tout as designed by an electrician, it's hard to imagine they never figured out the fins by the screws as being in the way of a socket. Once it was installed, it was much better than the old box, but I was fighting those dumb fins the entire time to get the screws in far enough to hold solid.
...
show more
Reviewed in the United States on June 15, 2023 by Shadeofdeath
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.
...
show more
Reviewed in the United States on December 14, 2022 by Stephen