Complete with two flexible ducts, 8 mounting screws, and a speed control switches, the blower supports 120mm duct connection for various ventilation solution across multiple environments The integrated speed controller allows customized airflows management, while the USB 5V design enables flexible installation in confined spaces without compromising ventilation This 120mm USB powered exhaust fan features 3 speed and 70CFM airflows, efficiently smoky, odors, and from printer enclosures while operating at quiet 1500RPM Perfect for ventilating resin fumes filled printer tents, eliminating bathroom humidity, or maintaining freshing airflows in workshops and grow tents through its 11.8cm diameter duct adaptability Ideal for printing enthusiasts, greenhouse maintainers, and pet house owners requiring reliabled air circulations systems with USB/Solar power compatibility, Manufacturer: REITINGE