Tubeaxial fan has aerodynamic, motor and DC drive technology. Propirad 28 VDC fan delivers 200 cfm at 4 iwg with an overall fan efficiency approaching 45 percent, in a package measuring only 3.75” (9.5 cm) in diameter. The fan is designed to provide either high flow spot cooling or centralized cooling of electronics. It can boost fan applications in ducted systems. Applications include tray/rack/cabinet circulation; small form-factor heat exchangers and high density heat sinks. They are applicable to chemical processing/fuel cells).