Like all our furnace filters
Actual Size: 9 1/2 x 35 1/2 x 3/4 (9
the efficiency of all air filters is rated according to the same criteria as set forth by ASHRAE
Nordic Pure 12x24x4 MERV 8 Pleated Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer
Actual Size: 11 1/2 x 23 1/2 x 1/2 (11
12x12x1 Furnace Air Filters MERV 12 Pleated Plus Carbon 12x14x1 Like all our furnace 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, help eliminate unwanted odors and other contaminants. Ideal for customers who not only need odor control but whose daily life demands high filtration Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 12 is equivalent to MPR 1500