5Pcs AVC 4028 40x28MM DC 12V 4PIN PWM High-Speed Dual Ball Bearing Booster Fan

Set of 5Pcs AVC 4028 booster fans designed for compact, high-demand cooling. Each fan measures 40x28MM and operates on DC 12V. Built with Dual Ball Bearing construction for extended life and reliable performance under continuous use. The 4PIN connection with PWM support enables precise speed control and efficient thermal management. Ideal for tight enclosures, small chassis, electronics cooling and other applications requiring a powerful, high-speed 40MM fan.