Electrical Box Knockout Plugs, 4" Screw and Bar Electrical Hole Seal
- HEAVY-DUTY GALVANIZED STEEL – Built from durable galvanized steel with a protective zinc coating for excellent strength, corrosion resistance, and long-lasting performance. The embossed design adds rigidity while helping the knockout seal center securely over unused electrical box openings.
- SECURE SCREW & BAR DESIGN – The pre-assembled Type S screw and bar configuration provides a strong, dependable hold. Once tightened, the retaining bar firmly secures the knockout cover in place for a stable, vibration-resistant installation.
- HELPS SEAL UNUSED KNOCKOUT HOLES – Properly closes unused conduit and knockout openings to help prevent dust, dirt, moisture, and debris from entering electrical boxes, junction boxes, panels, and enclosures while protecting the wiring and connections inside.
- FAST & EASY INSTALLATION – No complicated installation process required. Simply insert the retaining bar through the knockout hole, position the seal over the opening, and tighten the center screw for a secure fit. Ideal for new installations, repairs, retrofits, and maintenance work.
- AIRMONT PRODUCTS QUALITY – Airmont Products delivers dependable electrical supplies designed for professional performance and everyday reliability. Our knockout seals are engineered with durable materials, practical installation features, and consistent construction for electricians, contractors, maintenance professionals, and homeowners.
| Manufacturer | Airmont Products |
| Brand | Airmont Products |
| Number of Items | 1 |
| Included Components | Pre-assembled Screw and Bar |
| Material | Galvanized Steel |
| Colour | Silver |
| Manufacturer Part Number | AP-12059 |
| Material Type | Galvanized Steel |
| Model Number | AP-12059 |
| Product Type | Conduit Fittings |
| Item Highlight | Galvanized Steel Knockout Seal Closes Unused Electrical Box Openings with a Secure Preassembled Screw-and-Bar Design See more |
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Orders are processed and shipped from Washington
3-6 days (Domestic)
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BRSW2BI6OYMWAE3H |
Category |
Electrical , Electrical Boxes, Conduits & Fittings , Conduit Fittings |
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Estimated shipping
Select a product to estimate shipping.Highlights:
Screw & Bar Type
Pre-assembled
Galvanized Steel
Self-centering design
Airmont Products Knockout Seals
Premium Quality
Crafted from galvanized steel, this knockout seal is coated in protective layer of zinc to avoid rust and corrosion. Strong and sturdy, this knockout plug will seal unused holes in an electrical box and keep it dust-free,
Easy Installation
With it's pre-assembled screw and bar type installation system, this knockout seal is easy to install and stays in place securely. To install, simply slide the bar into the box and tighten the screw from the outside. This knockout seal has an embossed design which enables the seal to center itself during installation and stay in place securely.
Included Component
Our knockout seals com pre-assembled with a screw and bar for easy and secure installation.
Screw and Bar Type
To install, simply slide the bar through the hole, and tighten the screw.
Our knockout seals are crafted with high-quality steel that is zinc coated to provide extra durability.
Product details
Shipping & Delivery
At GofinchKart Australia, we aim to deliver your order quickly and safely.
Domestic Shipping (Australia):
Orders are typically delivered within 3–7 business days.
International Shipping:
Estimated delivery time is 12–26 business days, depending on the destination and customs processing.
Once your order has been dispatched, you will receive a tracking number. Delivery times may vary during public holidays or due to unforeseen delays.