Aerostar 19 7/8x21 1/2x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 12 Pack (Actual Size: 19 7/8\ x 21 1/2\ x
- Nominal Size: 19-7/8 x 21-1/2 x 1, Actual Size: 19-7/8" x 21-1/2" x 3/4".
- Comparable to MPR 1500 to 1900 Ultimate Allergen Defense and Honeywell Allergen Elite FPR 10.
- Designed to filter microscopic particles such as lint, dust mites, spores, pollen, pet dander, fine dust, smoke, and bacteria..
- 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.