16x25x1 6 PACK Merv 13 Pleated AC Furnace Air Filters 16x25x1 6 PACK Merv 13 Pleated AC Furnace Air Filters Protects from pollen, dirt, dust, pet dander and virus carriers, smoke, smog, lead dust, oil smoke and micro allergens. Actual Size: 15-1/2 x 24-1/2 x 3/4. | ASHRAE tested as required by LEED guidelines. Consistent pleat shape produces optimum performance, minimizes resistance and improves dirt loading characteristics throughout the life of the filter. Made in the USA