The 1/2" Knockout Filler is designed to close unused 1/2" knockout openings in electrical boxes, panels, enclosures, and other approved electrical equipment.

Made from metal, this knockout filler helps create a clean finished look while covering open knockouts that are not being used for conduit, fittings, or cable entry. The spring-style retaining clips help hold the filler securely in place once installed.

This is a practical part for electricians, contractors, builders, and maintenance teams working on panel cleanups, junction boxes, service work, renovations, and general electrical installations.

Always confirm knockout size, box or enclosure compatibility, and local electrical code before installation.

Key features

• 1/2" knockout filler
• Metal construction
• Designed to cover unused knockout openings
• Spring-style retaining clips
• Suitable for electrical boxes, panels, and enclosures
• Helps create a clean finished installation
• Useful for residential, commercial, and contractor electrical work

Best used for

• Electrical boxes
• Junction boxes
• Panels
• Enclosures
• Service work
• Renovation projects
• Contractor electrical installations
• Covering unused knockout holes