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The NESKO53 – 1 1/4″ Steel KO Filler is designed to securely close unused knockout openings in electrical boxes and enclosures, ensuring safety and efficiency. Crafted from durable steel for long-lasting performance, this filler is perfect for both commercial and residential applications, providing a reliable solution for cable management and protection.
Yes. The CEC requires that all unused openings in electrical enclosures be effectively closed to maintain the enclosure's protection rating and prevent accidental contact with energized parts. The NESKO53 KO filler provides a code-compliant solution for standard 1¼″ openings.
The NESKO53 is a steel filler primarily intended for use with metal (steel) electrical boxes and enclosures. While it may physically fit a 1¼″ knockout in a plastic box, steel fillers are generally not recommended for plastic enclosures where a plastic or snap-in filler would be a better match. Contact our team and we can help you find the right filler for your specific enclosure.
Yes — Northern Breaker Group stocks knockout fillers in a range of common sizes. If you need multiple sizes or bulk quantities for a commercial or industrial project, reach out to our Calgary, Edmonton, or Vancouver counters for a quote and we'll make sure you're covered.
