Description
The Lennox 26Z89 Air Filter 20″ X 22″ X 5″ MERV 11 is a replaceable filter component used to capture airborne particle carried through the return air stream before they enter the air-handling system. It uses a pleated media structure to increase surface area for particle retention while maintaining balanced airflow resistance. In HVAC systems, it is installed in the return filter cabinet or air handler intake section where it acts as a primary barrier against particulate contamination. It reduce buildup on heat exchange surfaces and internal mechanical parts, supporting stable airflow properties and consistent operational performance.
