- Nominal size: 18x20x1; Actual size 17 3/4"x 19 3/4" x 3/4"; 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
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