OEM squirrel cage fans, also known as forward-curved centrifugal blowers, are essential components in a wide variety of industrial and commercial applications. These fans are characterized by their cylindrical impeller with multiple forward-curved blades, which allow them to move large volumes of air efficiently at low to moderate static pressures. Their adaptability, compact design, quiet operation, and energy efficiency make them the preferred choice for original equipment manufacturers across many sectors. In this comprehensive article, we will explore the industries that use OEM squirrel cage fans the most, examine their applications, and explain why these fans are so vital to modern systems.