Electrical Box Knockout Plugs, 3-1/2" Screw and Bar Electrical Hole Seal |

Product Overview

When daily routines matters, the Electrical Box Knockout Plugs, 3-1/2" Screw and Bar Electrical Hole Seal | Galvanized steel knockout seal closes unused electrical box openings with a secure preassembled screw-and-bar design provides reliable performance through heavy-duty build quality. Designed with Galvanized Steel, weighing 9.07 g, available in Silver. Notable features include heavy-duty galvanized and galvanized steel, contributing to its user-tested character.

Key Features

• 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.

Why Choose the AirmontProducts Electrical Box Knockout Plugs

The Electrical Box Knockout Plugs, 3-1/2" Screw and Bar Electrical Hole Seal | Galvanized steel knockout seal closes unused electrical box openings with a secure preassembled screw-and-bar design earns repeat purchases through quality construction and heavy-duty galvanized, both delivering thoughtful design.

Best For

The AirmontProducts Electrical Box Knockout Plugs is best suited for: new installations, professional performance and everyday reliability.

Quick Summary

The AirmontProducts Electrical Box Knockout Plugs is a Conduit Fittings product by AirmontProducts. Material: Galvanized Steel. Brand: Airmont Products. Color: Silver. Item Weight: 9.07 g. Price: $41.98.

Product Specifications