Product details:

This 6 in x 24 in 550 CFM Phresh Filter is a state-of-the-art carbon filter that cleanses the air to make it clean of dust, foreign particulates, organic compounds and odors. Phresh Carbon Filters are half the weight, and last twice as long because they are made with the unique properties of a 6mm (1.8") RC-48 activated, certified virgin Australian activated carbon bed that is machine packed. These Phresh Filters also optimize air flow with a cone shaped internal base, an "Anti-air Bypass" system and 51% open air custom mesh. They are used in research labs, plant breeding, tissue culture, indoor gardening, backyard & commercial greenhouses for their total airstream filtration characteristics. Phresh Carbon Filters are professional-grade systems designed to meet the demands of hobby and commercial growing applications. Flange & prefilter included. Additional Sizes Available.