Halex 1 In. Steel Knockout Seal (2-Pack) is designed to provide a reliable solution for covering exposed knock-out holes in steel outlet boxes and other metal enclosures. Made from durable steel, these knockout seals ensure a secure fit and help maintain the integrity and safety of your electrical installations. I for professionals and DIY enthusiasts alike, this product an easy and effective way to protect electrical boxes from dust, debris, and other elements. Its sturdy construction s long-lasting performance in various applications. Model Number: 96073