Hydro Plus 4'' Filter Fan Combo Duct Inline Fan Carbon Filter Exhaust Kit for Grow Tent Ventilation Hydroponic Indoor Growing Kit (4'' Filter Kit) by Hydro Plus at Sun Light Village. Hurry! Limited time offer. Offer valid only while supplies last. 4'' Activated Carbon Filter: 4'' Flange: 10''H x 7''D Iodine Adsorption Value: 950 (High efficiency) Carbon Layer Thickness: 1.5 inches Specific Surface Area: 900-1000 square meter per gram Max. Endurable Temperature: 400 degrees Celsius (Safer) Operating Environment Temperature: -20 to 65 degrees Celsius use Coal Based activated carbon Changeable Velcro Pre-filter with 2 black elastic bands Thick Carbon Layer for Higher Absorption and Performance Exceptional odor control for better privacy.
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