20x20x5 Filter Actual Size: The actual dimensions of the 20x20x5 MERV 16 air filter are 20" x 19-3/4" x 4-3/8" . Please confirm that the filter size you need is correct before purchasing. The 20x20x5 MERV 16 Air Filter Is Perfectly Compatible with Following Air Cleaner Models: Compatible with Lennox Air Cleaner Model: HCC14-23; Replaces Filter Part Number: HCF14-16, HCF14-10 Compatible with Honeywell Models: F25F1018, F35F1016, F100F1020 ; Replaces Filter Part Number: 203721, FC35A1019, FC100A1011, FC200E1011 MERV 16 High Efficiency Filtration: It can effectively filter 95% of airborne particles as small as 0.3 microns, improving the air quality in your home or office. Material: Made of coconut-shell activated carbon and a carbon-coated fiber matrix material. Replacement Cycle: The filter has a lifespan of up to 1 year . It is recommended to replace it every 8-12 months based on your usage and environment conditions. Package Includes: 2 Pack 20x20x5 Furnace Filters