The DELTA PRODUCTS EFB0405VHD-F00 is a high-performance DC fan with an axial ball bearing system. Designed to operate on a range of 4.5V to 5.5V, this compact fan provides excellent cooling capabilities for various electronic devices. Measuring 40 x 40 x 20mm in size, it is perfect for space-constrained applications. Despite its small size, the fan delivers an impressive airflow of 10.1 cubic feet per minute (CFM), ensuring efficient heat dissipation. With a noise level of only 32.5dB, it operates quietly without causing any disruption. Trustworthy and durable, the DELTA PRODUCTS EFB0405VHD-F00 is the ideal cooling solution for your electronic projects.