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Profile: SurplusHydro specializes in providing hydroponic systems and components. We offer fans, blowers, fluorescent lighting, indoor greenhouses, lighting accessories, water filtration, and air & water pumps. Active air in-line duct fans feature durable ceramic-coated, metal housing, molded impeller, thermally protected AC motor, mounting brackets, and includes 8 foot pre-wired 120v cord. The flanges & end-caps are made from galvanized steel and are designed to be press-fitted into the PROfilters. No tools are required to install the flange and end-cap to the filter. The 6" Air King clip-on fan features a convenient and easy to use spring loaded clip, making the fan versatile for multiple uses. 12 outlet copper air divider can be individually opened or shut, for total aeration control.