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The Approved Vendor NERS150 is a steel knockout blank designed to seal half-inch knockout holes. This product is essential for maintaining the integrity of electrical enclosures and other machinery where knockout holes are present.
This knockout blank provides a reliable seal that prevents dust and moisture ingress.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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