GrowBright 4" Inline Duct Booster Fan - 80/150 cfm Electrical: 36 watts, .30 amps @ 120v Airflow capacities: 80 cfm stand-alone airflow (when used alone or as a primary fan) / 150 cfm booster flow (when used in conjunction with central blowers to boost airflow) Built-in 6' power cord with standard household grounded plug (NEMA 5-15) Lightweight, whisper-quiet, high-efficiency polycarbonate blades Overall Measurements: 5-7/8" length, 3-3/4" diameter, dual male connections with 1-1/4" flange depth ; Max operating temperature: 140F