18x18x1 Furnace Air Filters MERV 8 Pleated Plus Carbon 24 Pack 9 CFM every nutrient decision matters

every nutrient decision matters

1°F Temperature Accuracy ±0

space-saving format — expand to full 5″ × 5″ × 5″ with just water

A deliberate blend of fast-acting and natural nitrogen and calcium sources engineered for maximum effect and high solubility

easy to use and easy to store

18x18x1 Furnace Air Filters MERV 8 Pleated Plus Carbon 24 Pack 9 CFM every nutrient decision mattersNordic Pure 18x18x1 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. 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 material