Description
Brand Name: Gardner Bender | Material: STEEL | Packaging Type: Boxed | Shape: Round Metal knockout seals are fast and easy to install from inside or outside of box. | 1/2 inch size | Embossed for quick self-centering in unused knockouts | One screw holds seal in place | Made of rust-proofed, cold-rolled galvanized steel | Screw and bar are zinc-plated | Marked for size and catalog number for easy installation | 16 gauge steel, 3/8 inch thread | Metal knockout seals are fast and easy to install from inside or outside of box
