--- product_id: 286502833 title: "Southwire MSB1G One Gang Device Box with Depth Adjustable, Heavy Duty 42lb" brand: "southwire" price: "€ 65.59" currency: EUR in_stock: true reviews_count: 5 category: "Southwire" url: https://www.desertcart.nl/products/286502833-southwire-msb1g-one-gang-device-box-with-depth-adjustable-heavy store_origin: NL region: Netherlands --- # UL Classified for 2-hour fire resistance 42 lb heavy-duty mounting screws Extra thick PVC walls for rigidity Southwire MSB1G One Gang Device Box with Depth Adjustable, Heavy Duty 42lb **Brand:** southwire **Price:** € 65.59 **Availability:** ✅ In Stock ## Summary > 🔧 Upgrade your install game with the box that means business! ## Quick Answers - **What is this?** Southwire MSB1G One Gang Device Box with Depth Adjustable, Heavy Duty 42lb by southwire - **How much does it cost?** € 65.59 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/286502833-southwire-msb1g-one-gang-device-box-with-depth-adjustable-heavy) ## Best For - southwire enthusiasts ## Why This Product - Trusted southwire brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Heavy-duty 42 lb mounting screws included to hold fixtures firmly in place. - • **Fire-Safe Certified:** UL Classified to withstand 2-hour firewall requirements, prioritizing safety on every job. - • **Rock-Solid Stability:** Extra thick PVC walls ensure unmatched durability and rigidity for a secure install. - • **Smart Design, No Hassle:** One-piece molded construction with built-in wire clamps and threaded device holes for clean, reliable wiring. - • **Universal Compatibility:** Mounts effortlessly to both wood and 25-gauge metal studs for versatile applications. ## Overview The Southwire MSB1G One Gang Device Box combines heavy-duty 42 lb mounting screws, extra thick PVC walls for superior stability, and UL classification for 2-hour fire resistance. Designed for easy mounting on wood or metal studs, this one-piece molded box features built-in wire clamps and threaded holes, delivering a professional-grade, durable solution trusted by electricians and contractors alike. ## Description SMART BOX™ ORIGINAL BOXESMounts to wood or metal stud for new or old work. Unmatched in adjustability. Molded entirely of 1 piece with no moving parts to break or lose. Step down feature allows for wire entrance in both top and bottom of box. Mounts to wood or metal stud 25g. Extra thick PVC wall material creates stability and rigidity. Built-in wire clamps. All 6/32 device holes are threaded. Heavy duty 42 lb. mounting screws supplied. Boxes are UL Classified for 2 hour fire wall (all but MSB4G).Madison Electric is now part of the Southwire family. Product packaging may vary. Review: Smart box! - This box is perfect for replacing a single gang box with a double Review: Good product seems high quality - Solid, well‑built box that installs cleanly and holds fixtures securely. The material feels durable, the mounting points are strong, and everything lines up the way it should. Exactly what you want for a reliable electrical install. ## Features - Heavy duty 42 lb mounting screws supplied - Mounts to wood or metal stud 25g - Extra thick PVC wall material creates stability and rigidity - UL Listed - Madison Electric is now part of the Southwire family Product packaging may vary ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00H8NUVRO | | Best Sellers Rank | #111,700 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #89 in Outlet Boxes | | Brand | Southwire | | Brand Name | Southwire | | Capacity | 38 Cubic Inches | | Color | Gray | | Colour | Gray | | Customer Reviews | 4.7 out of 5 stars 3,865 Reviews | | Finish Type | Unfinished | | Finish type | Unfinished | | Global Trade Identification Number | 00784297017643 | | Included Components | MSB2G | | Installation Type | Can be screwed or nailed | | Item Dimensions D x W x H | 9.7D x 8.6W x 10.7H centimeters | | Item Type Name | 2-GANG PVC ELECTRICAL BOX | | Item Weight | 0.01 Ounces | | Manufacturer | Southwire | | Material | Polyvinyl Chloride | | Model Number | MSB2G | | Part Number | MSB2G | | Product dimensions | 9.7D x 8.6W x 10.7H centimeters | | Specification Met | Ul | | Style | Original | | UPC | 784297017643 | | Unit Count | 1 Count | ## Product Details - **Material:** Polyvinyl Chloride - **Brand:** Southwire - **Colour:** Gray - **Style:** Original - **Product dimensions:** 9.7D x 8.6W x 10.7H centimeters ## Images ![Southwire MSB1G One Gang Device Box with Depth Adjustable, Heavy Duty 42lb - Image 1](https://m.media-amazon.com/images/I/61fhKoMkiCL.jpg) ![Southwire MSB1G One Gang Device Box with Depth Adjustable, Heavy Duty 42lb - Image 2](https://m.media-amazon.com/images/I/71MiD9tMwZL.jpg) ![Southwire MSB1G One Gang Device Box with Depth Adjustable, Heavy Duty 42lb - Image 3](https://m.media-amazon.com/images/I/81Jpb0RYcbL.jpg) ![Southwire MSB1G One Gang Device Box with Depth Adjustable, Heavy Duty 42lb - Image 4](https://m.media-amazon.com/images/I/71oJEGb653L.jpg) ![Southwire MSB1G One Gang Device Box with Depth Adjustable, Heavy Duty 42lb - Image 5](https://m.media-amazon.com/images/I/7126FiS0uvL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Smart box! *by B***M on 3 March 2024* This box is perfect for replacing a single gang box with a double ### ⭐⭐⭐⭐⭐ Good product seems high quality *by A***B on 12 May 2026* Solid, well‑built box that installs cleanly and holds fixtures securely. The material feels durable, the mounting points are strong, and everything lines up the way it should. Exactly what you want for a reliable electrical install. ### ⭐⭐⭐⭐⭐ These are the best for old work. *by W***R on 22 November 2023* 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. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.nl/products/286502833-southwire-msb1g-one-gang-device-box-with-depth-adjustable-heavy](https://www.desertcart.nl/products/286502833-southwire-msb1g-one-gang-device-box-with-depth-adjustable-heavy) --- *Product available on Desertcart Netherlands* *Store origin: NL* *Last updated: 2026-07-06*