Electrical Knockout Plug 3-1/2 in Screw-in Bar Hole Seal, 12 Pack
Electrical Knockout Plug 3-1/2 in Screw-in Bar Hole Seal, 12 Pack
Each plug is made from galvanized steel with a zinc coating. The embossed face adds stiffness and helps the plug sit centered over an unused opening in an electrical box. A pre-assembled Type S screw and retaining bar lock the cover in place once the center screw is tightened.
To install, push the retaining bar through the knockout opening, set the plug over the hole, and turn the center screw until snug. Use it to close unused openings in junction boxes, panels, and enclosures, including new work, repairs, and retrofits, so the wiring inside stays enclosed.
Specifications
- Pack count: 12
- Trade size: 3-1/2 in
- Material: Galvanized steel with zinc coating
- Fastening: Pre-assembled Type S screw and retaining bar
- Style: Embossed knockout seal
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