X6670 16x25x5 11 with Lennox X6670, HCF16-11,HCF16-10, Furnace HVAC System, R…
20x20x1 in. 8 Reusable Washable HVAC Furnace Air Filter
This reusable filter has a service life equal to 500 disposable filters. Users can clean the filter with water and mild detergent before air drying it for reuse, and cleaning every 3 to 6 months is advised.