---
product_id: 286502833
title: "Southwire MSB1G One Gang Device Box with Depth Adjustable, Heavy Duty 42lb"
brand: "southwire"
price: "₱4344"
currency: PHP
in_stock: true
reviews_count: 5
category: "Southwire"
url: https://www.desertcart.ph/products/286502833-southwire-msb1g-one-gang-device-box-with-depth-adjustable-heavy
store_origin: PH
region: Philippines
---

# 42 lb heavy-duty mounting screws Extra thick PVC walls for rigidity Threaded 6/32 device holes Southwire MSB1G One Gang Device Box with Depth Adjustable, Heavy Duty 42lb

**Brand:** southwire
**Price:** ₱4344
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate your electrical game with the ultimate heavy-duty smart box!

## Quick Answers

- **What is this?** Southwire MSB1G One Gang Device Box with Depth Adjustable, Heavy Duty 42lb by southwire
- **How much does it cost?** ₱4344 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/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

- • **Unmatched Stability:** Extra thick PVC walls provide superior rigidity and durability for long-term reliability.
- • **UL Classified Safety:** Certified for 2-hour fire wall protection, giving you peace of mind on every project.
- • **Secure Fit Every Time:** All device holes are threaded for a precise, no-slip device mounting experience.
- • **Effortless Wire Management:** Step-down design allows wire entry from both top and bottom, simplifying installation.
- • **Built to Last, Mounted to Impress:** Heavy-duty 42 lb screws ensure rock-solid installation on wood or metal studs.

## Overview

The Southwire MSB1G One Gang Device Box combines heavy-duty 42 lb mounting screws, extra thick PVC walls, and a unique step-down wire entry design to deliver unmatched stability and ease of installation. UL Classified for fire safety and compatible with wood or metal studs, this box is engineered for professionals who demand durability and precision in every build.

## 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.

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*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-06-20*