12x12x1 Pleated MERV 12 Air Filters 8 3/4x18x1 5 and 6-inch thick filters

5 and 6-inch thick filters could last up to 6 months

and pollen

These activated carbon

poly disposable filters

but they WILL be strong

12x12x1 Pleated MERV 12 Air Filters 8 3/4x18x1 5 and 6-inch thick filtersActual Size: 11 3 4 x 11 3 4 x 3 4 (11. 75 x 11. 75 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