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The Arlington NM903 is a non-metallic snap-in knockout bushing designed for easy use in conduit installations. This product is made from durable plastic and is available in black. It is ideal for applications where a clean finish is needed after making a knockout in a box or panel. The trade size is one and one-fourth inches.
Use this knockout bushing to ensure safe and efficient conduit installation, preventing dust and other elements from entering unused knockouts.
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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