Orbit 4 in Square 1-1/2 in Deep 4S Square Steel Extension Box 1/2 in and 3/4 in Mixed Knockouts 4SB-MKO-EXT

Product Overview

The Orbit 4SB-MKO-EXT is a galvanized, welded steel extension box for 4S square box installations. Its 1-1/2 in depth adds box depth or adapts an existing electrical box opening.

The box has a 21 cu in volume, mixed 1/2 in and 3/4 in knockouts, and a dry-location rating. It supports fixtures or luminaires up to 50 lb.

Key Features

• 4 in square, 1-1/2 in deep extension box
• 21 cu in box volume
• Mixed 1/2 in and 3/4 in knockouts
• 16 GA sheet steel with galvanized finish and welded construction
• UL, RoHS; UL File E227970

What the Orbit 4SB-MKO-EXT Is Used For

The Orbit 4SB-MKO-EXT adds depth to a 4S square box or adapts an existing electrical box opening. Listed applications include 4S square box installations, switch and receptacle rough-in, and commercial wall or ceiling wiring.

Mixed 1/2 in and 3/4 in Knockouts

This extension box has a mixed pattern of 1/2 in and 3/4 in knockouts. Check that the knockout pattern and 1-1/2 in depth suit the intended box layout.

Steel Construction and Product Ratings

The box is made from 16 GA sheet steel, has a galvanized finish, and uses welded construction. It has a dry-location rating and supports fixtures or luminaires up to 50 lb.

• UL and RoHS
• UL File E227970

Before You Order

Confirm that the 4SB-MKO-EXT model, 1-1/2 in depth, and mixed 1/2 in and 3/4 in knockout pattern suit your intended installation.

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 Extension Box 1/2 in and 3/4 in Mixed Knockouts 4SB-MKO-EXT. For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.