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a human hair is about 70 microns wide
Measure your current air filter and compare with the Actual Size of this item to make sure you order the correct filter
clean air in your home and office
Actual Size: 9 1/2 x 13 1/2 x 3/4 (9
Actual Size: 19 1/2 x 19 1/2 x 1/2 (19
21 1/2x24x1 Exact MERV 12 AC Furnace Filters Number Per Box:6 a human hair is aboutActual Size: 21 1 2 x 24 x 3 4 (21. 5 x 24 x 0. 75) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores and other contaminants. Ideal for high efficiency air filtration and will help those with moderate allergies and asthma. Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 12 is equivalent to MPR 1500 1900 Made in the USA. Nordic Pure MERV
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