20x20x4 (3 5/8) Pleated MERV 8 Air Filters 12x24x2 Each time air passes through

Each time air passes through a Nordic Pure Pleated ASG replacement furnace filter

Trion Air Bear Replacement filters have a depth of 4 7/8" and ideal for helping keep equipment working efficiently and reducing odors

We special order the internal frame for the half inch furnace filter

Nordic Pure MERV 10 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments

20x20x4 (3 5/8) Pleated MERV 8 Air Filters 12x24x2 Each time air passes throughActual Size: 19 1 2 x 19 1 2 x 3 5 8 (19. 5 x 19. 5 x 3. 63) Removes lint, dust, pollen, bacteria, pet dander, dust mites, mold spores and other contaminants If you are replacing a Honeywell or Lennox 20x20x4 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 media. Moisture resistant frame. Nordic Pure MERV 8 is equivalent to MPR 800