Compact axial fans are equipment-cooling fans with blades that circulate air to regulate temperatures in machinery and equipment enclosures. They can either push hot air out of an enclosure or pull cooler outside air into the enclosure. These fans have a motor that rotates the fan blades to create airflow and a housing that can mount into existing louvered vents or cutouts that match the shape of the fan. Sometimes called muffin fans or computer-cooling fans, compact axial fans are often used for cooling computers, copy machines, electronic instruments, machine tool equipment, and refrigeration systems.