Nordic Pure 20x25x5L2M15-2 Lennox X6675 Replacement MERV 15 furnace Air Filter, Qty 2 Actual Size of Air Filter: 19 7/8 x 24 7/8 x 4 3/8 Hypoallergenic and antimicrobial pleated electrostatic filter material Recommended for newer units Superior Air Filter for Residential and Commercial Property Nordic Pure Manufacturer Direct Since 1960-Made in the USA