Image is Representational - See Manufacturer Specs | DC Fan Axial Ball Bearing Voltage: 24V Flow rate: 22.4CFM Noise: 54dB Dimensions: 40 X 40 X 28mm A DC tubeaxial fan with dimensions as 40 mm(Length)x40 mm(Width)x 28 mm(Height) Voltage: 24VDC a flow rate of 22.4 CFM and a fan speed of 17200 RPM Rated power : 6.6W Noise level: 54 dBA and having ball bearing. It has a temperature range of -20 C to 65 C.