The Phat Filters - is a professional grade, world renowned greenhouse filter that will remove the nastiest
odors from your growing area.Phat filters use a very special charcoal carbon that comes from a source of
pre-Cambrian ore, or some of the oldest carbon found on earth. This carbon dates back 250 million years
and is the reason our Phat Filters are so effective!
Featuring RC 412 Charcoal
Given CFM rating is for scrubbing. Divide by 2 to get exhaust filter CFM
— Ships from Seattle, Washington USA.