16X25X1 NOVA Pleat Air Filter (6 Pack) - O'Brien Clean Air Filters 16x25x1(Nominal Size) 15 1/2x24 1/2x3/4(Actual Size) High Efficiency NOVA Pleat - MERV 8 Equivalent More Surface Area to Capture Allergens Filters out Dust, Pet Dander, Lint, Pollen, and Dust Mites Made in the U.S.A. Free from Metal