Deflecto White Plastic Increaser-Reducer IRB43

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The Deflect-O White Plastic Increaser-Reducer IRB43 is designed to seamlessly connect 4-inch and 3-inch ducts, making it ideal for bathroom fan installations. Crafted from durable plastic, it ensures a snug, secure fit while facilitating efficient airflow between different duct sizes. Its clean white finish blends discreetly with most ductwork, delivering both functionality and a professional appearance for your ventilation projects. The Deflecto White Plastic Increaser/Reducer Connects 3" duct to 4" duct quickly and easily. Show more