Imperial Manufacturing VT0109 4" – 3" Plastic Reducer/Increaser

The Imperial Manufacturing 4″ to 3″ Plastic Reducer/Increaser designed for HVAC systems to adapt and regulate airflow between ducts of different sizes. This reducer/increaser is made from durable plastic, ensuring longevity and resistance to corrosion. It facilitates efficient ventilation by allowing smooth transition or adjustment of duct sizes, optimizing airflow distribution within residential and commercial environments. Ideal for HVAC installations and renovations, it helps maintain consistent air pressure and enhances system efficiency.