Features: Experience efficient extraction and cooling with this 12cm brushless exhaust fan featuring a convenient on/off switching, ideal for versatile ventilation applications in various settings. Powered by 12V0.3A, it delivers a most speed of 3000RPM and airflows of 81CFM, with a DC5.5x2.1mm female connector and 53cm wire for easy installation and reliability performances. Designed for enthusiasts, hobbyists, and professional, especially those working with 3D printers, or welding projects, ensuring user friendly operate. Perfect for diverse environment like kitchens, greenhouses, pet room, paint booths, and bathrooms to effectively remove fumes and dissipate heat for improved air quality. This durability plastic ventilation fan offer a compact and efficient solution for optimal air circulations, making it reliability for any exhaust or cooling systems. Specifications: Component: plastic Size:Approx. 12x12cm/4.72x4.72inch Round Tube Diameter:Approx.11.8cm/4.65inch voltages:12V0.3A Air volumes: 81.02CFM Rotation speed: 3000RPM Noise:36.63DBA Bearing: oil-containing bearing Power adapter not included, can be powered by solar panel, adapters, mobile power supplies Package Includes: 1pc Duct Exhaust Fan 1pc 5521 switching Line 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.