USTF402012MWSF is a DC Brushless Fans from US Toyo Fan. It has an airflow of 5.5 CFM, Acoustical Noise of 22 dB (A), RPM of 7000. The frames are Black PBT (UL 94V-0), bearings are ball, and impeller are made Black PBT (UL 94V-0). It measures 1.38 in. sq x 0.39 in. thick (35mm sq x 10mm thick), and weighs 0.35 oz (10g). The fan operates at 12 VDC (9.5 to 13.8), at a temperature range of -10° to + 70° C. Its insulation is Class A with a resistance of 10 Megohms min @ 500 VDC and dielectric strength of 500 VAC for 1 minute. Termination are through lead wires (UL approved, AWG26). The fans meets UL, CSA, and CE and polarity and impedance protected.