Features: Experience powerful ventilation with this 12cm USB powered exhaust fan featuring 3 speed settings (up to 1500RPM) and 70CFM airflows, ideal for efficient smokes extraction and air circulation in delicate spaces. Crafted with sturdy ABS plastic and a detachable mesh guard, this portable blower fan offers flexible installation using 120mm ducts and 8 screws, designed for easy cleaning and long term reliability. Essential for DIY hobbyists, 3D printing enthusiasts, and electronics professional requiring workspaces ventilation or equipment cooling solution. Optimize air quality in RVs, bathrooms, greenhouses, pet houses, or soldering stations by quickly removing fumes, odors, and excesses heat through its directional pipe exhaust system. suitable with 5V USB power sources including solar panel and adapters, this multifunctional fan delivers quiet yet stable airflows management for both industrial and household ventilation needs. Specifications: Material: Plastic Size: 11.8x10cm/4.64x3.93inches Fan Size: 12x12cm/4.72x4.72inches Speed: 1500RPM Air volumes: 70CFM Package Includes: 1Set 120mm Usb5v Three-Speed Speed Control Exhaust Fan note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!