18x24x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 2 Pack flowering nutrients Boric Acid

Boric Acid

pet dander and pollen and microscopic allergens such as dust and smoke particles like a magnet

500 square feet (15

almost transparent

197“ x 0

18x24x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 2 Pack flowering nutrients Boric AcidNordic Pure 18x24x4 MERV 12 Pleated Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer. This results in less flow restriction and 33% more surface area for cleaner smelling air. It will help eliminate unwanted odors as well as trap most airborne dust and particulate matter for fresh, clean air. Odorous gases and vapors (VOC) are attracted to and held by the activated carbon