The Lennox Y9674 Increaser is designed to transition venting systems from a 4-inch diameter to a 5-inch diameter, ensuring secure and efficient airflow connections in your HVAC installations. Constructed from durable galvanized steel, this increaser offers reliable performance and corrosion resistance for long-term use. Ideal for both residential and light commercial applications, it provides a tight, stable fit that maintains proper venting system integrity and safety compliance.

Ensure optimal airflow transitions in your ductwork or venting systems with this genuine Lennox increaser, available now at Beenimax.