Replaced approximately every 30 to 60 days for fresh clean air
Nordic Pure 12x24x4 Pleated Air Filters MERV 8 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home
polyester filter material which acts as a pre-filter
it helps your HVAC unit perform more efficiently
Actual Size: 17 3/4 x 29 3/4 x 3/4 (17
18x27x1 MERV 14 AC Furnace Filters Number Per Box:6 Replaced approximately every 30 toActual Size: 17 1 2 x 26 1 2 x 3 4 (17. 5 x 26. 5 x 0. 75) Airborne dust, pollen, mold spores, pet dander, smog, dust mite debris, smoke, and bacteria are captured and removed. Ideal for customers with health problems or for commercial units which support a rating of MERV 14 and above Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 14 is equivalent to MPR 2800 Made in the USA. Nordic Pure MERV