20 Pack 3/4" Knockout Seals, Galvanized Steel Electrical Box Plugs, Zinc-Plated Rust Resistant Removable Covers for Sealing Unused Openings in Junction Box/Panel

20 Pcs Stainless Steel

• GALVANIZED STEEL KNOCKOUT SEALS (ZINC-PLATED, RUST RESISTANT): Each Wocloer electrical box knockout plug is made from zinc-plated galvanized steel — not bare iron. The zinc coating provides corrosion resistance that standard iron knockout plugs simply cannot match. These rust resistant knockout seals are suitable for indoor electrical boxes and covered outdoor junction boxes
• 20 PACK 3/4 INCH KNOCKOUT SEALS: This set provides 20 pack durable 3/4-inch knockout plugs, perfectly sized for standard 3/4 inch electrical box openings. Ideal for electricians and DIYers working on junction boxes, panels, or conduit systems — keep a full pack on hand for new installations, panel upgrades, or replacement jobs
• REMOVABLE, REUSABLE, ROUND KNOCKOUT HOLE PLUGS: These round knockout seals press firmly into unused knockout openings to seal electrical box holes against dust and debris. Unlike permanent snap-in plugs, the removable design allows you to remove and reuse the knockout hole plug when future wiring changes or circuit modifications are needed — no damage to the electrical box or the knockout filler itself. A smart choice for keeping dust out of electrical boxes during and after installation
• FITS JUNCTION BOX, CONDUIT BOX, AND ELECTRICAL PANEL KNOCKOUTS: Designed to plug unused conduit holes and fill knockout holes in electrical panels, junction boxes, and metal electrical enclosures. The zinc-plated finish provides weatherproof performance for both indoor and covered outdoor electrical box applications. Use these electrical box knockout plugs to seal electrical box openings during new construction wiring, panel upgrades, or electrical box accessory replacement
• KNOCKOUT SEALS FOR ELECTRICIANS AND DIY HOMEOWNERS: Whether you are a professional electrician sealing unused knockouts on a multi-box commercial job or a homeowner closing an electrical box hole cover during a basement wiring project, this 20 pack knockout plugs set offers professional-grade coverage at a practical price. Each metal knockout seal delivers a tight fit and clean finish