Aerostar 20x25x1 MERV 6 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 19 3/4"x24 3/4"x3/4")

Nominal size: 20x25x1; Actual size: 19 3/4"x24 3/4"x3/4"; This MERV 6 filter is comparable with MPR 300 & FPR N/A, Designed to filter microscopic particles such as lint, dust, and pollen, Simple to install and a cost-effective step towards a healthier home environment. For best results, change your filters every 60 to 90 days but increase frequency to 30 days during peak summer and winter months, 100% synthetic electrostatic media for high efficiency with low air flow resistance, Manufactured by Filtration Group, a world-leading manufacturer and supplier of filtration solutions making the world safer, healthier & more productive