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The Approved Vendor NERRW400300 is a reducing washer designed for rigid conduit applications. This product is manufactured from steel and is specifically used to reduce knockout sizes on sheet metal boxes, enclosures, or cabinets.
This reducing washer provides a secure and efficient method for connecting conduits in various electrical installations.
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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