Steel City 52171 1/2&3/4E Pre-Galvanized Steel Square Box with Ground Bump and 1/2-Inch and 3/4-Inch Eccentric Knockouts

Product Description Thomas & Betts 521711/23/4E-30 Box Sqr 4"W/Ko From the Manufacturer The Steel City 521711234E is a pre-galvanized steel square box with a ground bump, 1/2-Inch and 3/4-Inch eccentric knockouts. Is a 4-Inch box that is 1-1/2-Inch deep with a 21-Cubic Inch capacity and is intended for use with conduits. On each side and both ends of the box there are two 1/2-Inch conduit knockouts and one 1/2-Inch and 3/4-Inch eccentric knockout. The bottom of the box contains three 1/2-Inch conduit knockout and two 1/2-Inch and 3/4-Inch eccentric knockouts. The knockouts provide better contact with the conduit fitting and locknut to the box while improving the grounding path. The individual wedges on an eccentric knockout can be removed without going all the way around the circle to either be a 1/2-Inch or 3/4-Inch. The ground screw bump allows quicker mounting by eliminating the need to remove the portion of the screw that threads through the back of the box and improves the repositioning of the grounding conductor. 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.

• Welded Construction
• For use with conduits
• 1/2-Inch and 3/4-Inch eccentric knockouts
• Protects device from damage
• UL listed