20x25x1 Furnace Air Filters MERV 8 Pleated Plus Carbon 3 Pack Garden Accessories *Works with both MH and

*Works with both MH and HPS lamps

This is a clean and strong premium propagation tray made from high quality materials for durability

Zero ozone production

- Only perform treatments during the vegetative plant stage

Insect Frass contains every macro- and micronutrient

20x25x1 Furnace Air Filters MERV 8 Pleated Plus Carbon 3 Pack Garden Accessories *Works with both MH andNordic Pure 20x25x1 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