LEDwholesalers 4" Hydroponic Carbon Air Filter 200CFM Air Scrubber Oder Control, GYO2305
This activated carbon air filter effectively removes odor and particulates from the air through physical filtration as well as chemical absorption.  Used in conjunction with a centrifugal inline fan, fresh air can be obtained even in an environment where organic fertilizers are used.  This filter is suitable for use in greenhouses, hospitals, lavatories, public buildings, food processing facilities, etc.SpecificationsFlange : 4"CFM: 200Carbon Type: Activated CTC60Average Life Expectancy: 1.5 years