It removes any and all airborne smells associated with your crop. Basically to get rid of all smells from your crop you suspend a carbon filter from the ceiling (with chains) and attach it to the intake of your extractor fan. The air is then drawn through your carbon filter which absorbs ALL the smell before being extracted outside.
Simple and 100% effective. If you need any advice on this please feel free to email us with the size of your room and the number of lights you are running and we will tell you which size of fan and filter would be best suited for you.
See Extractor Fans to determine which fan goes with which filter. View a typical grow room set up: Click Here.