Features: High performances exhaust fan with 2500RPM airflows and DC12V double ball bearing delivers efficient ventilation for smoked extraction and heat dissipation in compactly space. Features integrated speed dimmer (1000RPM-25000RPM adjustable) and universal AC100 240V input, enabling precise airflows control and low noise operation across diverse environment. -Ideal for electronics enthusiasts, makers, and workshop professional requiring reliable fume extraction in 3D printing, engraving, or soldering applications. Perfect for ventilating enclosed space like 9.8cm diameter air duct systems in small pet houses, grow tents, or paint booths requiring continuous air exchange. Complete kit includes a power adapter for seamlessly integration into DIY ventilation projects across multiple industrial and residential scenario. Specifications: Component:Plastic Thickness:Approx.16.50cm/6.5inch Air Duct Diameter:Approx.9.8cm/3.86inch Square Fan Size:Approx.12x12cm/4.72x4.72inch Fan speed: 2500RPM Bearing type: double ball Bearing Noise: 35dB Air Volumes: 65CFM Input Voltages: AC100-240V 50/60Hz, Output Voltages: 3V-12V2A Features Maintenance-free double ball bearing, super long service life, sufficient heat dissipation air volumes and air pressure Package Includes: 1pc Exhaust Fan 1pc Power Adapter note: Please allow 1-10mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.