20x20x1 Furnace Air Filters MERV 8 Pleated Plus Carbon 24 Pack double-ended or additives can be added

or additives can be added if the grower desires different specifications

For in-ground plantings

Most carbon filters are designed to be "terminal"——they are closed at one end and must be at the end of the ducting line

Its easy to clean and maintain

which will automatically lock with the stainless steel ratchet mechanism

20x20x1 Furnace Air Filters MERV 8 Pleated Plus Carbon 24 Pack double-ended or additives can be addedNordic Pure 20x20x1 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