Aerostar 19.875x 21.5x1 MERV 11 - 6 Count - Pleated HVAC, Furnace & Air Conditioner Filters - Removes Dust, Cold & Flu Germs, Lint, Mold, Pet Dander, Allergy-Causing Pollen, Smog & Smoke

About this item

• Nominal size: 19 7/8 x 21 1/2x1; Actual size: 19 7/8"x21 1/2"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 by Filtration Group, a world-leading manufacturer and supplier of filtration solutions making the world safer, healthier & more productive