Orbit 4 in Square 2-1/8 in Deep 4S Square Steel Box 1/2 in and 3/4 in Mixed Knockouts FB Bracket 4SDB-MKO-FB

Product Overview

Orbit 4SDB-MKO-FB is a welded deep 4S (4 in square) steel box intended for commercial switch, receptacle, fixture, and junction-box rough-in.

The box measures 4 in × 4 in × 2-1/8 in, provides 30.3 cu in of internal volume, includes mixed 1/2 in and 3/4 in knockouts, and ships with an FB bracket.

Key Features

• 4 in square welded steel box
• 2-1/8 in depth with 30.3 cu in capacity
• Mixed 1/2 in and 3/4 in knockouts
• Includes FB bracket
• 16 GA sheet steel with galvanized finish
• UL listed (UL File E227970) and RoHS compliant; rated for dry locations

Function and typical applications

This welded Orbit 4SDB-MKO-FB steel box is intended for commercial switch, receptacle, fixture, and junction-box rough-in and is suitable for wall and ceiling wiring layouts and new construction.

Specify this box where a deep 4S (4 in square) mounting is needed and where mixed 1/2 in and 3/4 in conduit or connector entries are appropriate.

• Switch and receptacle rough-in
• Fixture and junction-box rough-in
• Commercial wall and ceiling wiring
• New construction and contractor stock

Dimensions and box fill capacity

The 4SDB-MKO-FB measures 4 in W × 4 in H × 2-1/8 in D and has an internal volume of 30.3 cu in.

Confirm box-fill requirements per applicable electrical code to determine suitability for your specific conductors, devices, and grounds.

• Overall dimensions: 4 in W × 4 in H × 2-1/8 in D
• Internal volume: 30.3 cu in

Knockouts and FB bracket

The box includes mixed 1/2 in and 3/4 in knockouts to accept common conduit entries and compatible connectors.

An FB bracket is included. Verify the fixture and mounting method meet your support needs.

• Knockouts: 1/2 in and 3/4 in mixed pattern
• Includes FB bracket (verify fixture support requirements separately)

Materials, finish, certifications and location rating

Constructed from 16 gauge sheet steel with a galvanized finish and produced with a welded manufacturing process.

The box is listed to UL (File E227970) and is RoHS compliant. The product is shown with a dry-location rating.

• Material: 16 GA sheet steel
• Finish: Galvanized
• Manufacturing: Welded
• Certifications: UL (File E227970), RoHS
• Location rating: Dry location

Before You Order

Confirm the model number and required quantity before ordering and verify the depth, knockout pattern, bracket style, and box-fill capacity against project requirements and applicable electrical code.

• Installation should be completed by qualified electrical personnel.
• Verify grounding, box-fill calculations, and fixture/device support requirements prior to installation.

Ordering from Lumera Electric

Check the purchasing options shown on the Lumera Electric product page for Orbit 4 in Square 2-1/8 in Deep 4S Square Steel Box 1/2 in and 3/4 in Mixed Knockouts FB Bracket 4SDB-MKO-FB. For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.