Each time air passes through a Nordic Pure carbon pleated furnace filter
The Actual Size listed above is the exact size of the metal frame
Our carbon AC filter media prevents the growth of bacteria or mold
Nordic Pure 16x16x1 MERV 12 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer
16x20x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon Number Per Box:1 Each time air passes throughActual Size: 15 1 2 x 19 1 2 x 3 5 8 (15. 5 x 19. 5 x 3. 63) Airborne dust, pollen, mold spores, pet dander, smog, dust mite debris, smoke, and bacteria are captured and helps eliminate unwanted odors and other contaminants. If you are replacing a Honeywell or Lennox 16x20x4 Plus Carbon or an air filter with an MPR rating with an actual depth of 4 3 8, please see our 16x20x5 (4 3 8 actual depth) Hypoallergenic, antimicrobial, and electrostatic filter