Orbit 4SB-MC-MS 4" Square Welded Box with MC Clamps and MS Bracket, Pack of 100

Orbit 4SB-MC-MS 4" Square Welded Box with MC Clamps and MS Bracket

The Orbit 4SB-MC-MS is a 1-1/2" deep, 4" square (4S) electrical box built with fully welded seams for a rigid, durable enclosure that resists flexing and gapping at the corners over the life of the installation. This box arrives pre-equipped with integral MC clamps for fast, secure termination of MC (metal-clad) cable directly into the enclosure, eliminating the need for separate connectors in many applications. It also includes an MS mounting bracket, giving installers a ready-to-use mounting solution for attaching the box to studs, joists, or other framing members without sourcing a bracket separately. Together, the welded 4" square body, 1-1/2" depth, MC clamp provisions, and MS bracket make this a practical, job-ready box for electricians who need a dependable junction or device box for MC cable runs in commercial and residential construction.

Key Features

• 4" Square (4S) Box: Standard 4-inch square footprint compatible with common covers, mud rings, and device plates used throughout commercial and residential wiring systems.
• 1-1/2" Depth: Provides adequate interior volume for conductor fill and splicing while fitting standard wall and ceiling cavity depths.
• Fully Welded Construction: Seams are welded rather than simply crimped or folded, delivering a rigid box that holds its shape during handling, mounting, and cable pulling.
• Integral MC Clamps: Built-in clamps are designed to secure MC (metal-clad) cable directly at the box, streamlining rough-in and reducing the parts count needed on the job.
• MS Mounting Bracket Included: The included MS bracket simplifies attachment to framing, supporting efficient, consistent installation across multiple boxes on a job.
• Job-Ready Configuration: Combining the box, clamps, and bracket into one part number reduces the number of separate SKUs an electrical contractor needs to stock and pull for MC cable rough-in work.

Technical Specifications

• Box Size: 4" Square (4S)
• Depth: 1-1/2"
• Cable Clamp Type: MC Clamps
• Mounting Bracket: MS Bracket
• Construction: Welded

Typical Applications

• MC Cable Rough-In for Commercial Buildings
• Residential New Construction Wiring
• Junction and Device Box Installations on Framed Walls and Ceilings
• Panel and Device Wiring Requiring 4" Square Enclosures
• Electrical Contractor Rough-In Where Bracket-Mounted Boxes Are Specified

Why Orbit?

Orbit's 4SB-MC-MS box combines a welded 4" square enclosure, integral MC cable clamps, and an included MS mounting bracket into a single, streamlined part designed for real-world rough-in work. For electricians who need a rigid, code-friendly junction or device box that mounts quickly and terminates MC cable without extra hardware, this configuration helps keep jobs moving while reducing the number of separate components to source, stock, and install.