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The Arlington NM904 non-metallic snap-in knockout bushing is designed for effective closure of knockout openings in electrical boxes. Made from durable plastic, this product serves as a reliable accessory for your cable management needs.
The NM904 effectively seals unused knockout openings, enhancing safety and organization in 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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