Homesources 4" Inch 120 CFM Power Inline Booster Duct Fan with 2m Power Cord Build with Aluminum Fan Blade to Perform Max CFM Dimension: 4" x 7" / Duct Size: 4" Air flow 120 CFM, Max Temperature 130C Voltage 120/110v, Power 37W Power Cord 2M Long 6.6 Foot