Can Filter 50 Carbon Filter w/ out Flange 420 CFM

Can-Filters® provides one of natures best odor control materials, activated carbon. Can CKV-4 (carbon type) is specially developed for this purpose. Rated at 420 CFM, flange not included. Can Filter 50 Specifications Max Recirculating (Scrubbing) CFM: 840 cfm / 1426 m³h Recommended Min Airflow: 210 cfm / 356 m³h Prefilter: Yes Flange: 6, 8, 10 Max Operating Temp: 80ºC Pressure drop at max cfm: 180pa / .75wg Dimensions: (with pre-filter) Outside Diameter: 42cm / 16.5 Height: 50cm / 19.7 Total Weight: 25kg / 55lbs. Carbon Weight: 19kg / 42lbs. Carbon Bed Depth: 6.5cm / 2.56 How To Size Fan to Filter To match a Can Filter for your size growing environment, use this formula: Length x Width x Height divided by 3. This figure will give you the minimum recommended CFM for your fan. Then match your inline fan to the size filter you need by getting one that's within the range that the Can Filter can operate within. Example, 10 x 10 x 20 = 2000 Cu. Ft. 2000 Cu. Ft./3 = 667 CFM 667 CFM fan is the minimum fan size for this area. After establishing fan size, match it to appropriate sized filter, IE, Can 100. How Much CFM Loss Through A Carbon Filter? Every different size of filter provides a different resistance to each different size and style of fan you put on it, a filter at the maximum exhaust CFM rating has approximately 0.7 wg. pressure drop. All Fans will have a lower CFM at a higher pressure. For Example at .5 wg the 10 Max-Fan goes from 1019 CFM to 885 CFM, the 12 Max-Fan would go from 1708 CFM to 1595 CFM. How much CFM is lost through a 25ft. Section of ducting? Approximately 3%(straight hard cast) to 7%(flex ducting). 1% to 4% Additional loss for every 90° bend. Do I need to replace the pre-filter? It is a good idea to replace the pre-filter when they become dirty because the pre filter is blocking larger dirt and dust particles from getting into the pore structure of the carbon, a dirty pre filter increases the pressure, which will decrease the flow thr

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