10x10x1 Furnace Air Filters MERV 8 Pleated Plus Carbon 2 Pack pots-containers Spectrum PhysioSpec Indoor™ Broad R4

Spectrum  PhysioSpec Indoor™ Broad R4

and no ectomycorrhizae

For horizontal installation only

including on flowering plants and the flowers themselves

10x10x1 Furnace Air Filters MERV 8 Pleated Plus Carbon 2 Pack pots-containers Spectrum PhysioSpec Indoor™ Broad R4Nordic Pure 10x10x1 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