layer is a MERV rated smooth poly-blend filter material
Nordic Pure 16x30x2 MERV 8 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer
Nordic Pure 12x24x4 MERV 13 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that will attract and capture most airborne particulates in your home
Nordic Pure 20x35x2 Trane Replacement RTU ( Roof Top Air Handling Unit) Pleated Air Filters MERV 13 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home
22x23x1 MERV 14 AC Furnace Filters 25x28x1 layer is a MERV ratedActual Size: 21 1 2 x 22 1 2 x 3 4 (21. 5 x 22. 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