20x22x1 Pleated Air Filters MERV 12 Plus Carbon 12 Pack biological fertilizer These are 304 Food-safe stainless

These are 304 Food-safe stainless steel

Increases the diversity of beneficial bacteria that help solubilize important minerals and nutrients for plants

000-gallon filter life

and bloodborne pathogens

Bluelab pH Down 1 Gallon

20x22x1 Pleated Air Filters MERV 12 Plus Carbon 12 Pack biological fertilizer These are 304 Food-safe stainlessNordic Pure 20x22x1 MERV 12 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