Max cfm: 840/1400m³h @ 0.1 sec contact time Recommended Min Airflow: 420 cfm Prefilter: Optional Flange: Optional, 8", 10" & 12" Dimensions: (with pre-filter) ·Outside Diameter: 420mm/16.5" ·Height: 1000mm/39.4" ·Carbon Weight: 36kg/79.2lbs. ·Carbon Bed Depth: 65mm/2.56" Max Operating Temp: 80ºC Pressure drop at max cfm: 100pa/ .40wg