Active Air Carbon Filter, 8"x 39", 950 CFMProvide your indoor plants clean air for their better growth with Active Air Carbon Filter. It eliminates the heavy particles and most powerful odors from the air via virgin activated Australian granular carbon and pre filter. It is a great product to use for your indoor grow operations and has a two year life expectancy. Remove the Dankest and Powerful Odors: Active Air Carbon Filter is built to remove the contaminants and odors from the air using