This NESCO reducing washer lets you mount a 2-inch fitting into a 3-inch knockout, making it ideal for industrial panels, pull boxes, and heavy-duty electrical enclosures where oversized knockouts are common on the job site. Built for dry location use, it simplifies rough-in work and eliminates the need for custom adapters. A reliable, low-cost solution for electricians working with mismatched knockout and conduit sizes.

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