The 8-inch DuraBreeze® Carbon Filter keeps indoor garden air clean and fresh. This filter contains a 2.5-inch pelletized carbon bed within zinc-anodized steel housing. It includes a pre-filter, attached flange and a one-year warranty, and has an approximate life span of one year. Effective up to 850 cubic feet per minute with a diameter of 14.75 inches and a height of 22 inches including the flange. Weighs approximately 55 pounds.