Accumulair Diamond 20x25x6 13 Air/Furnace Filters (6 pack)

Nominal size is 20x25x6. Actual size is 19.5 x 24.5 x 5.88. 13 Rating. Each filter lasts up to 3 months. Uniform pleat shape enhances dust holding capacity and maximizes air flow. Supercharged pleated panel filtering media ideally suited for capturing fine airborne allergens.