Lennox X6670 Furnace Filters
Two 16x25x5 MERV 11 filters for the Lennox X6670: the genuine Lennox Healthy Climate HCF16-11 OEM replacement filter, and a lower-cost 16x25x5 replacement filter for the same cabinet. Check the X6670 part number on your current filter.
See all Lennox furnace filters, other 5-inch furnace filters and the full furnace filters range.
