Tried and true, tested and trusted, conventional ventilators have stood the test of time. The GF series are the PPV fans that helped to build the RAMFAN brand in the industry and these economical gas fans are well known for their durability. Compact and light with outstanding close range ventilation using TurboForce™ technology to generate stronger, faster and more focused airflow than possible with conventional propeller designs.     Specifications: Model GF164SE Part GB5001HSE Weight 59 lbs / 27 kg Impeller 7-Blade Dimensions (h/w/d) 21 x 20 x 17 in / 53 x 51 x 43 cm Engine Honda GC160 4.6 Hp / 3.4 kW Noise 96.1 dB@3' (1 m) Run Time 1 hr 58 min Approvals CE AMCA