18x25x1 Furnace Air Filters MERV 12 Pleated Plus Carbon 2 Pack special-order Case of 2000

Case of 2000

one thermal controller

Get the enzymes down at planting times—2-3 times during the growing season so it’s always available to the plants

Thankfully

High Altitude Elevation Recommendation: 3500ft +

18x25x1 Furnace Air Filters MERV 12 Pleated Plus Carbon 2 Pack special-order Case of 2000Nordic Pure 18x25x1 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