X6672 is for the Lennox Air Cleaner Model HCC16-28 Filter which is a Lennox MERV 16 Carbon Coated Filter also known as x6672 Lennox healthy climate 16x25x5 MERV 16 filter
HCXF16-16, HCF16-16, HCF16-10
- Honeywell FC35A1001, FC100A1029, FC200E1029
- Carrier/Bryant EXPXXFIL0016, EXPXXUNV0016, EXPXXLMC0016, FILCCCAR0016