20x20x4 (3 5/8) Pleated MERV 13 Air Filters Number Per Box:6 The electrostatic charge works as

The electrostatic charge works as a magnet to draw in and trap smaller airborne particles

Replaces Trion Air Bear Cub filters and others that require an actual 3" depth and ideal for superior filtration and odor control or commercial units

Nordic Pure 20x20x5 Air Bear Replacement MERV 13 air filters measure an actual depth of 4 15/16"

Nordic Pure 20x20x1 MERV 10 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer

Each Nordic Pure 4” MERV 15 air filter will capture more than 90% of 1

20x20x4 (3 5/8) Pleated MERV 13 Air Filters Number Per Box:6 The electrostatic charge works asActual 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, smog 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