Nordic Pure 16x25x5 Honeywell Replacement Pleated MERV 10 Air Filters Qty 2 Actual Size of Air Filter: 15 3/4 x 24 3/4 x 4 3/8 Attracts indoor allergens, dust, pollen and other airborne contaminants. Hypoallergenic and antimicrobial pleated electrostatic filter material Nordic Pure recommends changing 5" air filters every 3-6 months Proudly Made in the U.S.A. by Nordic Pure