Spiral Manufacturing offers high-quality PVS tees and reducing tees for underground HVAC ductwork, ensuring efficient airflow distribution in residential and commercial applications. Our durable PVS 90 tees are designed for seamless integration into underground ducting systems, providing strong and reliable connections. Engineered to resist moisture and corrosion, these fittings enhance the longevity and performance of your ductwork. Whether for new construction or retrofit projects, our PVS tees deliver superior airflow management and system efficiency. Trust Spiral Manufacturing for precision-engineered underground ductwork solutions that meet industry standards. Contact us today to learn more about our complete line of PVS fittings.