categoryFan - DCdescriptionBLWR 48V 175X69MM PWM / TACH / IP56seriesTCAmanufacturer delta Product GroupsFan typeBlowerSize / sizeRound - 175mm diameter x 69mm WVoltage _ rated48VDCPower (W) 76.8W characteristicIP56, GR-487, PWM control; speed sensor (tachometer) RPM4000 RPMnoise 70.8 dB (A) Static pressure 1.957 inches of water ( 487.5 Pa)airflow 428.0 CFM ( 12.12 m3 / min)Termination4 leadBearing typeBallOperating temperature-13 ~ 158 ° F (-25 ~ 70 ° C)