The Freshmaker” filter line will enable single pass filtration of strong odors at very high CFM’s. These highly efficient charcoal fiber filters can be used in the front or the end of any exhaust line. You may push or pull air through them. They have a tough structure that won’t collapse, and are extremely light, easy to handle and attach and they do not need any assembly. The Organic Air Freshmaker filters consist of three layers of highly active charcoal fiber with millions and millions of active micro pores that attract and capture odors. The filter is easily washed to keep the micro pores clean and ready to absorb more odors. 0-5000 CFM The highest rated filters with the largest surface area on the market, and at less than ½ the size of old traditional filters! Compare an old 150 filter that weighs in excess of a 150 lbs., to a higher capacity filter that weighs less than 10 pounds! Technology & Organic Air Filters are making life easier.