Steel City 531511234UB 4" Square Box Extension Ring, 21 Cubic Inches, 1-1/2" Deep, 1/2" and 3/4" Eccentric Knockouts, Pre-Galvanized Steel

Product Description Square Box Extension Ring, 21 Cubic Inches, 4 Inch Square x 1-1/2 Inch Deep, 1/2 Inch and 3/4 Inch Eccentric Knockouts, Pre-Galvanized Steel From the Manufacturer The Steel City 531511234UB is a pre-galvanized steel square box extension ring that has a 4-Inch diameter and is 1-1/2-Inch deep with a 21-Cubic Inch capacity. On each side of the ring there are two 1/2-Inch conduit knockouts along with one 1/2-Inch and one 3/4-Inch eccentric knockout while both ends contain two 1/2-Inch conduit knockout. The extension is used when you need to add wire capacity and mounts directly on top of the square box so additional circuits can be ran. Steel City is the industries leading product line of metallic switch and outlet boxes used in electrical construction. Since 1904, its products have represented the highest quality standards in manufacturing and innovative design, with one of the most complete offerings available.

• 21 Cubic Inches
• 4 Inch Square x 1-1/2 Inch Deep
• 1/2 Inch and 3/4 Inch Eccentric Knockouts
• Pre-Galvanized Steel