Our exhaust fan adopts a 3000RPM motor, 3-speed speed control with switches, air volumes of 50CFM, and can be used with a 75mm diameter air duct. achieving efficient exhaust and allowing you to powerful ventilation effect. This fan is perfect for enthusiasts, hobbyists, and professional who use printers or work in electronic repair rooms, providing ventilation . Very suitable for use in campers, greenhouses, pet houses, and bathrooms, it effectively removes and maintains a comfortable . This fan is designed for versatility and can be powered by a 5V solar panel or a USB power adapter, making it a universally for various applications. This fan is crafted from ABS and designed for long-term use, providing a detachable design for easy and maintenance to ensures long-time .