Max cfm: 200/350m³h @ 0.1 sec contact time Recommended Max Airflow: 340m³h Prefilter: Optional Flange: Optional, 6" & 8" Dimensions: (with pre-filter) ·Outside Diameter: 305mm/12" ·Height: 330mm/13" ·Carbon Weight: 7kg/15.4lbs. ·Carbon Bed Depth: 50mm/2" Max Operating Temp: 80ºC Pressure drop at max cfm: 100pa/ .40wg