Phresh Carbon Filter - 300 X 500mm for effective air filtrationPhresh Carbon Filter 300 X 500mm for effective air filtration Original Phat Phresh Air Activated Carbon Filter 300 X 500mm These filters offer the ultimate in air scrubbing. Machine packed with 46mm RC 48 activated, certified virgin carbon to ensure maximum carbon density with less movement than other filters. These filters offer a cone shaped internal base for optimum air flow. The 51% open air custom mesh design helps make these filters half the