20x22x1 Pleated MERV 12 Plus Carbon AC Furnace Filters 24 Pack AIR FILTER BOXES they are lightweight

they are lightweight

This will keep the mycorrhizal fungi in suspension for equal distribution when applying as a root drench

sturdy frame & connectors

The Zenport J603 extra strong

It begins working on contact and does not stop until it has killed down to

20x22x1 Pleated MERV 12 Plus Carbon AC Furnace Filters 24 Pack AIR FILTER BOXES they are lightweightNordic 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