Knockout Seal, Gardner Bender, 3/4 in, Steel, Silver, Zinc-Plated

From single parts to complete kits, Gardner Bender has versatile, durable hole making products that contractors depend on. If you need to knockout, punch, notch, drill or insulate, Gardner Bender has the right tool for the job. Metal knockout seals are fast and easy-to-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
• Screw and bar are zinc plated
• Marked for size and catalog number for easy installation
• 16 ga steel, 3/8 in thread