Orbit 4 in Square 1-1/2 in Deep 4S Square Steel Box MC Clamp FB Bracket 4SB-MC-FB

Product Overview

The Orbit 4SB-MC-FB is a welded 4S square steel electrical box sized for commercial switch, receptacle, fixture and junction box rough-in.

This SKU is a 4 in square box, 1-1/2 in deep (21 cu in) with an integrated MC cable clamp and FB mounting bracket, manufactured from 16 GA galvanized sheet steel and UL listed (UL File E227970).

Key Features

• 4 in square welded box — 4 in W x 4 in H x 1-1/2 in depth
• 21 cubic inches of box volume
• Integrated MC clamp for metal-clad cable entry
• FB bracket included for mounting/fixture attachment
• 16 GA galvanized sheet steel construction
• UL listed and RoHS compliant (UL File E227970); rated for dry locations

Function and intended use

The Orbit 4SB-MC-FB is a 4S square rough-in box intended for commercial switch, receptacle, fixture, and junction box installations where a 4 in square opening and 1-1/2 in depth are required.

It provides a welded steel enclosure with provisions for cable entry and mounting accessories.

• Typical applications: switch and receptacle rough-in, commercial wall and ceiling wiring, fixture and device box layouts, new construction.

Key specifications and materials

Use these specifications to confirm fit with project plans and device selections.

• Shape: 4 in square
• Depth: 1-1/2 in
• Box volume: 21 cu in
• Dimensions: 4 in W x 4 in H x 1-1/2 in
• Material: 16 GA sheet steel with galvanized finish
• Manufacturing: welded construction

Mounting, clamp and bracket details

The 4SB-MC-FB includes an integrated MC clamp for metal-clad cable retention and an FB-style bracket for mounting fixtures or devices. Confirm mounting orientation and attachment methods during installation.

• Mounting type: 4S square box rough-in mount
• Clamp type: integrated MC clamp
• Bracket type: FB bracket

Environmental and certification ratings

The box has a galvanized finish and is specified for dry location use. It is listed by UL and is noted as RoHS compliant; manufacturer literature references UL File E227970.

• Location rating: Dry location
• Certifications: UL listed; RoHS compliant; UL File E227970

Before You Order

Confirm the model number and that the box features meet your project requirements.

• Verify depth, clamp type and bracket style match your device and cable requirements.
• Check box-fill requirements and grounding connections for your installation.
• Installation should be performed by qualified electrical personnel.

Ordering from Lumera Electric

Check the purchasing options shown on the Lumera Electric product page for Orbit 4 in Square 1-1/2 in Deep 4S Square Steel Box MC Clamp FB Bracket 4SB-MC-FB. For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.