This hermetic filter drier is the industry standard for field replacements and new installations where physical durability and maximum contaminant capacity are required

This specific model features an 8 to 13 psi spring range

ports 2 and 3 are connected and port 1 is blocked

Magnetic plungers and rebuild kits are sold separately if your valve is leaking or failing to seat properly

exceeding standard outlet capacities for safety compliance

Lennox 33H63 Flange 320735-701 This hermetic filter drier isFor 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