Active Air Carbon Filter 8 x 39 in. 950 CFM, Australian Virgin Carbon

How the Active Air Carbon Filter 8 x 39 Handles Heavy Odour This full-length carbon filter is built for rooms that run their exhaust fan hard for weeks at a time. It measures 39 in long with an 8 in attached flange and a 950 CFM rating. The cylinder holds a 1.8 in bed of virgin activated carbon from Australia, machine packed end to end. Those granules adsorb the volatile compounds behind strong odour, holding them on a porous surface. With so much bed area, air keeps contact with the carbon even at higher fan speeds. That extra contact time matters most in the final weeks of flower. Powder-coated aluminium tops and bases hold the shape without adding much weight. A pre-filter sleeve comes included to keep dust off the carbon. Life expectancy runs up to two years, with humidity and runtime setting the pace. Boxed, it measures about 13 x 13 x 40.9 in and ships at roughly 41.6 lb. Its length suits ceiling hangs and horizontal mounts in rooms rather than short tents. Hanging an 8x39 Carbon Filter in a Grow Room An 8x39 carbon filter is a room filter, best where the exhaust fan runs near full speed through late flower. Match the fan to the filter's rating, and use a controller to trim speed when the room is quiet. Hang it horizontally near the ceiling with two supports, since a filter this long and heavy should not hang from one point. Pull air through it toward the fan so the motor sees scrubbed air. Keep duct runs short and straight, because static pressure steals airflow from the label figure. Rinse the pre-filter whenever it greys over and let it dry fully before reinstalling. Damp air shortens carbon life, so hold humidity in a sensible band during the last weeks. Plan the hanging space before it arrives, because the length surprises people in tight rooms. When smell leaks at normal speed, the bed is spent and the unit should be replaced. Set up right, it keeps a busy flower room's odour from reaching the hallway. Key Features 950 CFM rating: Handles an 8 in fan running hard through late flower. 39 in carbon body: Large bed area keeps contact time up at high airflow. 1.8 in virgin carbon bed: Machine-packed Australian granular carbon throughout. Pre-filter included: Keeps dust from clogging the carbon surface. Up to 2 years of life: Long service with controlled humidity. Technical Specifications Specification Value Brand Active Air Part number ACCF398 Size 8 x 39 in Airflow rating 950 CFM Carbon Virgin activated Australian granular carbon Carbon bed depth 1.8 in Pre-filter 1 included Flange Attached Tops and bases Powder-coated aluminium Dimensions (each) 13 x 13 x 40.9 in Shipping weight 41.6 lb Life expectancy Up to 2 years, depending on conditions UPC 638104016377