Series of 2.756” (70 mm) tubeaxial DC fans deliver airflows ranging from 19 to 60 cfm with noise levels of 49.5 to 29.0 dB. Series OD70 maximizes performance in enclosure applications. Nine different fan models are available as standard products in three popular package sizes. The line is offered in 12 and 24 VDC versions. It can be built in alternate speeds and can be ordered with optional IP55 protection. Special functions include thermal control, alarm, tachometer and pulse-width modulation (PWM).