Aerostar Pleated Air Filter, MERV 8, 18x20x1, Pack of 6

• Nominal size: 18x20x1; Actual size 17 3/4"x 19 3/4" x 3/4"; This MERV 8 filter is comparable with MPR 600 & FPR 5.

• Designed to filter microscopic particles such as lint, dust mites, spores, 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