20x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon Number Per Box:1 Important Note: Almost ALL furnace

Important Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air condition filter

Actual Size: 11 1/2 x 23 3/8 x 3 5/8 (11

Nordic Pure 20x25x1 MERV 13 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that attracts and capture most airborne particulates in your home

Half inch ring panel furnace air conditioner filters are especially great for apartments

25 x 35 x 0

20x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon Number Per Box:1 Important Note: Almost ALL furnaceActual Size: 19 1 2 x 19 1 2 x 3 5 8 (19. 5 x 19. 5 x 3. 63) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores, help eliminate unwanted odors and other contaminants. If you are replacing a Honeywell or Lennox 20x20x4 Plus Carbon or an air filter with an MPR rating with an actual depth of 4 3 8, please see our 20x20x5 (4 3 8 actual depth) Hypoallergenic, antimicrobial, and electrostatic filter