Smart Box Shark Tooth Fixture And Ceiling Electrical Box With Hole Saw For Precise Cuts And Quick Install Southwire MSBST250 Mounts 3 Zero And 4 Zero Fixtures Up To Six Pounds With Location Accuracy Requires Nine Sixteenths Inch Driver

Single-unit shark tooth fixture box with built-in hole saw
✔️ Built-in hole saw gives exact cut while mounting fixtures up to 6 lbs

A self-cutting electrical box that creates its own opening and mounts fixtures without templates. Ideal for quick, precise installs in walls or ceilings, basements, attics, or utility rooms.

✅ Built-in hole saw creates precise hole size every time
✅ Piercing drill bit ensures accurate location during install
✅ 2-1/2" depth; volume 16.5 cu in; compact profile
✅ Supports fixtures up to 6 lbs; 3/0 and 4/0 compatible
✅ Not for lath and plaster walls; requires 9/16" driver (not included)

💡 What is a smart box shark tooth fixture used for in electrical installs?

This self-cutting box speeds up work by cutting its own opening and aiding fixture mounting without templates, improving precision and reducing install time. - Self-cuts its own hole with a center piercing bit for alignment - Mounts fixtures up to 6 lbs and accepts 3/0 and 4/0 fixtures - 2-1/2 inch depth and 16.5 cu in volume suit compact spaces - Ideal for surface mount in walls and ceilings such as basements and attics