smooth side
Nordic Pure 12x18x1 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
0 micron contaminants and up to 65% of 1
Nordic Pure 3” MERV 8 Trion Air Bear Cub Replacement filters are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home or office
HVAC systems should be rated to handle filters of MERV 14 and above
12x24x4 (3 5/8) Pleated MERV 15 Air Filters Exact smooth sideActual Size: 11 1 2 x 23 3 8 x 3 5 8 (11. 5 x 23. 38 x 3. 63) Airborne dust, pollen, mold spores, pet dander, smog, dust mite debris, smoke, and bacteria are captured and removed. Ideal for customers looking for superior filtration or for commercial units which support a rating of MERV 15 and above Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 15+ is equivalent to MPR 2800 Made in the USA.