Sigma Engineered Sol. 49154 Knockout Seal ProConnex Round, Steel Zinc-Plated BRAND NEW! THE PACKING WAS OPENED AND INSPECTED. This Sigma Engineered Solutions knockout seal is a high-quality accessory for your electrical equipment and supplies. Made of durable steel and zinc-plated for long-lasting use, it is designed to protect your wire, cable, and conduit from dust, dirt, and other harmful particles. With a round shape and a weight of only 0.100 pounds, it is easy to install and use. The silver color and compact size of 0.400 inches in length and 3.65 inches in width make it a sleek addition to your electrical setup. This knockout seal is a must-have for anyone looking to keep their electrical connections clean and protected. UL Listed No Height 0.31" Color Silver Shape Round Sub Brand ProConnex Application Closure of Unused Box Outlets Packaging Type Polybag Inner Diameter 2.02" Diameter 2.19 Product Type Knockout Seal Material Zinc-Plated Steel Each Weight 0.100 LB Alternative UPC 785991183658 Width 1-1/2"