6-Pack Air Filter 20x25x4, MERV 11, Pleated, AC Furnace Air Filter
* Note: One end of filters is damaged in warehouse. * Nominal size: 20x25x4; Actual size: 19 1/2x24 1/2x3 3/4; This MERV 11 filter is comparable with MPR 1000-1200 & FPR 7. * Designed to filter microscopic particles such as lint, dust mites, spores, pollen, pet dander, fine dust, and smoke * Simple to install and a cost-effective step towards a healthier home environment. Replace 3-5 filters every 3-6 months. * 100% synthetic electrostatic media for high efficiency with low air flow resistance