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The Approved Vendor NERS400 is designed for sealing knockout holes in various applications. This product includes four knockout blanks made from steel, ensuring a durable and reliable solution for electrical and plumbing installations.
This product offers an effective method for ensuring your installations maintain safety and neatness by covering open knockout holes.
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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