Amazon.com: Lennox X6673 20 x 25 x 5 Inch MERV 11 Efficient Air Filter Replacement for Healthy Climate HC11 Air Purifier Cleaner Purification Systems (3 Pack) : Home & Kitchen
Atomic X6673 MERV 11 Lennox Compatible Air Cleaner Filter Media for HCC20-28 - 20x25x5, 2-Pack - Amazon.com
Filterbuy 20x25x5 Air Filter MERV 13 Optimal Defense (2-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1037, Lennox X6673, Carrier, and More (Actual Size: 19.88 x 24.75 x 4.38 Inches) - Amazon.com
20x25x5 AIRx HEALTH Replacement for Lennox X6673 Air Filter - MERV 13, 2-Pack
Filters Fast FF20255X6673M8 Replacement for Lennox X6673 MERV8, 20x25x5 - 2-Pack
Lennox Healthy Climate X6673 20x25x5 MERV 11 Filter-Actual Size 19-3/4" X 24-3/4" X 4-3/8"; PACK OF 3 FILTERS | Replacement for Honeywell HW 1037 - Amazon.com
Atomic X6673 MERV 11 Lennox Compatible Air Cleaner Filter Media for HC - Atomic Filters
AirPurete 20x25x5 (Actual Size: 19-3/4" x 24-3/4" x 4-3/8"), Pleated HVAC AC/Furnace Air Filters | Replacement for Honeywell FC100A1037, Lennox X6673, Carrier, & Bryant | MERV 11 | Pack of 3 - Amazon.com
Lennox MERV 11 Healthy Climate Filter X0585 2 Pack X0585 Replacement Lennox Filter 2 Pack [X0585-2] : HVAC Parts Online, Heating and Air Conditioning Parts
20 x 25 x 5 MERV 8 Lennox X6673, X6675, HCF20-10, HCF20-16 w/ Free Shipping - US Home Filter