Can-Fan Can-Lite Carbon Filter Fan Exhaust KitThe Can Lite Carbon Filter Exhaust Kit is designed and built for convenience and long life. With 100% Australian Granulated carbon, aluminum top and bottom, integrated flange and 51% open perforation, the Can Lite Filter from Can Fan is a top choice for ventilation and odor control in your grow room or environment. Each filter has a carbon bed thickness of 2" and is shrink wrapped, boxed and labeled for ease of use. This kit includes: Can Fan Can Lite