Lennox X6675 Carbon Clean 16 MERV 16 Filter 20"x25"x5" (5 Pack) Use in Lennox Healthy Climate HCC20-16 Air Cleaner MERV 16 Efficiency to capture particles as small as 0.1 microns MERV 16 Replacement for several Honeywell, Carrier and Trion Air Bear Air Cleaners Lasts up to 1 Year in Many Home Environments Genuine Lennox OEM Filter