--- product_id: 37648909 title: "Southwire MSBMMT3G 3 Gang Multi Mount Device Box with Depth Adjustable; Heavy Duty 42lb; Gray" brand: "southwire" price: "¥194" currency: CNY in_stock: true category: "Southwire" url: https://china.desertcart.com/products/37648909-southwire-msbmmt3g-3-gang-multi-mount-device-box-with-depth store_origin: CN region: China --- # 3 gang multi-mount versatility depth adjustable for perfect fit 42lb heavy-duty strength Southwire MSBMMT3G 3 Gang Multi Mount Device Box with Depth Adjustable; Heavy Duty 42lb; Gray **Brand:** southwire **Price:** ¥194 **Availability:** ✅ In Stock ## Summary > ⚡ Power your space with precision and style! ## Quick Answers - **What is this?** Southwire MSBMMT3G 3 Gang Multi Mount Device Box with Depth Adjustable; Heavy Duty 42lb; Gray by southwire - **How much does it cost?** ¥194 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [china.desertcart.com](https://china.desertcart.com/products/37648909-southwire-msbmmt3g-3-gang-multi-mount-device-box-with-depth) ## 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:** High-impact polycarbonate construction with UL Listing and RoHS compliance guarantees durability and peace of mind. - • **Smart Home Ready:** Low voltage dividers safely separate power and data lines, perfect for modern integrated setups. - • **Cable Capacity Boost:** Removable interior blocks expand cubic inch space, giving your cables room to breathe without sacrificing safety. - • **Flexible Mounting Mastery:** Seamlessly install horizontally or vertically with removable nail tabs and top blocks for ultimate placement freedom. - • **Pro-Level Cable Management:** ½" knockouts compatible with blue tube or PVC conduit ensure a sleek, professional finish every time. ## Overview The Southwire MSBMMT3G is a 3-gang multi-mount electrical box designed for both horizontal and vertical installations. Featuring depth adjustability, removable interior blocks for increased cable capacity, and ½" knockouts for easy conduit connections, it supports clean, professional setups. Its low voltage dividers enable safe separation of mixed voltages, ideal for smart home applications. Constructed from high-impact polycarbonate and backed by UL Listing and RoHS compliance, this heavy-duty 42lb rated box ensures secure, long-lasting installations. ## Description Southwire’s thoughtful design includes ½" knockouts for quick conduit connections and built-in wall dividers to safely separate mixed voltages. That means you can run power and data lines in the same box without worry. ## Features - Designed for both horizontal and vertical installations, this low voltage mounting box includes removable nail tabs for easy metal stud mounting and top blocks for secure vertical placement—perfect for flexible home theater or TV setups. - Removable interior mounting blocks allow for increased cubic inch capacity, giving you more room for cables and connections without compromising safety or performance. - Includes ½" knockouts compatible with blue tube or PVC conduit, streamlining your cable management and ensuring a clean, professional installation every time. - Low voltage wall dividers enable safe separation of mixed voltages within the same box—ideal for combining power and data lines in modern smart home applications. - Made from high-impact polycarbonate and backed by UL Listing and RoHS compliance, this box includes heavy-duty mounting screws for secure installation and long-lasting reliability. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00H8NV1WS | | Best Sellers Rank | #2,129 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #3 in Electrical Outlet Boxes | | Brand Name | Southwire | | Color | Gray | | Customer Reviews | 4.6 4.6 out of 5 stars (141) | | Finish Type | Painted | | Global Trade Identification Number | 00784297017728 | | Included Components | MSBMMT3G | | Installation Type | Nail-On | | Item Dimensions D x W x H | 3.5"D x 5.9"W x 3.82"H | | Item Type Name | 3-GANG MULTI-MOUNT ELECTRICAL BOX | | Item Weight | 0.2 kg | | Manufacturer | Southwire | | Material | Polycarbonate | | Model Number | MSBMMT3G | | Number of Items | 1 | | Part Number | MSBMMT3G | | Specification Met | Ul | | Style | Multi-Mount | | UPC | 784297017728 | | Unit Count | 1 Count | ## Product Details - **Brand:** Southwire - **Color:** Gray - **Material:** Polycarbonate - **Product Dimensions:** 3.5"D x 5.9"W x 3.82"H - **Style:** Multi-Mount ## Images ![Southwire MSBMMT3G 3 Gang Multi Mount Device Box with Depth Adjustable; Heavy Duty 42lb; Gray - Image 1](https://m.media-amazon.com/images/I/61U1vyUQwPL.jpg) ![Southwire MSBMMT3G 3 Gang Multi Mount Device Box with Depth Adjustable; Heavy Duty 42lb; Gray - Image 2](https://m.media-amazon.com/images/I/71jfkaz+B-L.jpg) ## Available Options This product comes in different **Size, Style** options. --- ## 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://china.desertcart.com/products/37648909-southwire-msbmmt3g-3-gang-multi-mount-device-box-with-depth](https://china.desertcart.com/products/37648909-southwire-msbmmt3g-3-gang-multi-mount-device-box-with-depth) --- *Product available on Desertcart China* *Store origin: CN* *Last updated: 2026-08-13*