The Rhino Pro Filter is constructed from Australian-mined RC412 carbon, the best in the world. The carbon is tightly packed and sealed into a high-efficiency airflow cylinder with a vortex cone in the base and a custom pore surface for maximum transference. The high-porosity carbon and lightweight aluminium make the Rhino filter smaller and easier to handle. 50 mm bed of RC412 activated carbon. 1.6 mm aluminium tops and bases for reduced weight. Unique “Anti Air Bypass” system. 51% open area custom mesh for greater air flow. Machine packed carbon means more carbon and less movement.