---
product_id: 58452007
title: "Southwire -MSBST250 Fixture and Ceiling Electrical Box Smart Box Shark Tooth with Hole Saw"
brand: "southwire"
price: "R$167"
currency: BRL
in_stock: true
reviews_count: 5
url: https://www.desertcart.com.br/products/58452007-southwire-msbst250-fixture-and-ceiling-electrical-box-smart-box-shark
store_origin: BR
region: Brazil
---

# Pinpoint location accuracy Supports fixtures up to 6 lbs Perfect hole cut every time Southwire -MSBST250 Fixture and Ceiling Electrical Box Smart Box Shark Tooth with Hole Saw

**Brand:** southwire
**Price:** R$167
**Availability:** ✅ In Stock

## Summary

> 🦈 Cut, mount, done—smart installs made shark sharp!

## Quick Answers

- **What is this?** Southwire -MSBST250 Fixture and Ceiling Electrical Box Smart Box Shark Tooth with Hole Saw by southwire
- **How much does it cost?** R$167 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/58452007-southwire-msbst250-fixture-and-ceiling-electrical-box-smart-box-shark)

## 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

- • **Surface-Mount Ready:** Raised mounting rings inside the box back wall make attic and basement installs seamless.
- • **Compact Yet Spacious:** 2-1/2" deep with 16.5 cu in volume, balancing slim profile and ample wiring space.
- • **Trusted Brand Legacy:** Madison Electric now part of Southwire—industry reliability with modern innovation.
- • **Flawless Installation Precision:** Built-in hole saw with piercing drill bit ensures exact placement—no guesswork, no extra tools.
- • **Universal Fixture Compatibility:** Mounting hole spacing fits 3/0 and 4/0 fixtures, supporting up to 6 lbs for versatile use.

## Overview

The Southwire MSBST250 Smart Box Shark Tooth is a polycarbonate surface-mount electrical box featuring an integrated hole saw and piercing drill bit for precise, tool-free hole cutting. Designed to support fixtures up to 6 lbs with mounting hole spacing compatible with 3/0 and 4/0 fixtures, it offers a 2.5-inch depth and 16.5 cubic inch volume. Ideal for quick, accurate installations in attics or basements, this product combines Madison Electric’s trusted craftsmanship with Southwire’s innovation.

## Description

Southwire -MSBST250 Fixture and Ceiling Electrical Box Smart Box Shark Tooth with Hole Saw

## Features

- A perfect cut every time
- No special hole saw or template required
- Location accuracy during installation
- Mounting hole spacing accommodates 3/0 and 4/0 fixtures; supports fixtures up to 6 lbs
- Requires 9/16 inch driver (not included)Madison Electric is now part of the Southwire family Product packaging may vary

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Polycarbonate |
| Brand | Southwire |
| Color | Gray |
| Style | Shark Tooth |
| Finish Type | Matte |
| Installation Type | Surface-Mount |
| Manufacturer | Madison Electric Products |
| UPC | 784297023101 |
| Global Trade Identification Number | 00784297023101 |
| Part Number | MSBST250 |
| Item Weight | 1.44 ounces |
| Product Dimensions | 7 x 2 x 5 inches |
| Item model number | MSBST250 |
| Size | Supports 6 lb |
| Finish | Matte |
| Pattern | Device Box |
| Shape | Shape |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Included Components | Fixture and Ceiling Electrical Box Smart Box Shark Tooth with Hole Saw |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Polycarbonate
- **Brand:** Southwire
- **Color:** Gray
- **Style:** Shark Tooth
- **Finish Type:** Matte

## Images

![Southwire -MSBST250 Fixture and Ceiling Electrical Box Smart Box Shark Tooth with Hole Saw - Image 1](https://m.media-amazon.com/images/I/61qAsG6V2tL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ great mounting box!
*by B***H on August 26, 2025*

perfect for what i needed. the functionality of this design allows you to install the box without cutting a hole in the sheetrock bigger than the box itself. the 45 degree angle mounting screws provided with this are very sharp, and kept the box perfectly in place while mounting it. once mounted, it is strong enough to hang off of it. has several pop open wire entry windows in different locations to customize the installation. nice sturdy box!

### ⭐⭐⭐⭐⭐ Good item!
*by J***N on September 6, 2025*

Southwire Electrical Box for Ceiling Fan, Light Fixture, 50lb Ceiling Fan and 75lb Light Fixture Support, Depth Adjustable, Gray, MSBFANWorks perfectly for meNo extra work requiredI install a ceiling fan on my laundry room effortlesslyI do recommend it

### ⭐⭐⭐⭐⭐ These are the best for old work.
*by W***R on November 22, 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.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.com.br/products/58452007-southwire-msbst250-fixture-and-ceiling-electrical-box-smart-box-shark](https://www.desertcart.com.br/products/58452007-southwire-msbst250-fixture-and-ceiling-electrical-box-smart-box-shark)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-02-16*