Gardner Bender KO701 Knockout Seal, Steel, Silver, Galvanized

Install from inside or outside of box. Embossed for quick self-centering in unused knockouts. One screw holds seal in place. Made of rust-proofed, cold-rolled galvanized steel. 16 ga steel, 3/8 in thread.
UPC: 032076007010
Model Number: KO701