moisture pooling on the blower deck

Ensure all ASCO valve internals are seated correctly during installation to prevent bypass issues and maintain rated flow coefficients

exceeding standard outlet capacities for safety compliance

For 240V dual-element residential systems

Lennox 33H63 Flange 320735-701 moisture pooling on the blowerFor veteran technicians maintaining residential or commercial exhaust systems, the Lennox 33H63 Smoke Collar Flange is a critical OEM replacement part designed to ensure a high integrity connection between the smoke collar and HVAC ductwork. This heavy duty furnace venting component is engineered from galvanized steel, providing essential resistance to high temperatures and corrosive flue gases. As a Lennox replacement flange (also identified by part