Features: Experience powerful airflows with this AC100-240V adjustable speed 12cm pipe exhaust fan, delivering up to 81CFM at 3000RPM for efficient cooling and ventilation in various applications. Constructed from durability plastic, this 12V 0.3A cooling fan includes a circular vent design and compatibility for 12cm ducts, ensuring reliability performances and easy installation. Ideal for enthusiasts, hobbyists, and professional, especially those working with 3D printers, cutter, or welding projects, for enhanced control and safety. Versatile for use in kitchens, greenhouses, pet houses, or booths to effectively remove odors, and dissipate heat in demanding environment. With its wide voltages ranges and compact size, this ventilation fan offer quiet operate and robust airflows for consistent air quality management across multiple settings. Specifications: Component: Plastic Total length:Approx.16.5cm/6.5inch Round tube diameter:Approx.11.8cm/ 4.65inch voltages: AC100-240V Air volumes: 81.02CFM Rotation speed: 3000RPM Noise: 36.63DBA Bearing: Oil bearing Package Includes: 1pc 12cm Duct Exhaust Fan(US) 1pc Speed Controller 2pcs Duct 8pcs Screw; note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.