Aerostar 16x20x1 MERV 11 플리츠 에어 필터, AC 퍼니스 에어 필터, 4팩 (실제 사이즈: 15 3/4"x19 3/4"x3/4")

["Nominal size: 16x20x1; Actual size: 15 3/4\"x19 3/4\"x3/4\"; 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. 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 in the USA by Filtration Group, a world-leading manufacturer and supplier of filtration solutions making the world safer, healthier & more productive"]