●Multi-purpose use, strong & durable, lightwegith design with exceptional air flow, non-corrosive housing is almost indestructible
●Applicable in underground &/or confined space ventilation
●Patented air inlet switching connector can be transformed into a high performance smoke & fog removal machine
●Flame resistant Polypropylene housing with flame retardant rating at UL94-5VA
●Glass fibre polyester resin fan blade with spark resistant feature
●Can be electric or gas driven
●Accommodates 8"" (203mm) flexible duct
●Can use with airflow duct canister for easy transporting & storage
●Noise level = 78dBA
●not explosion proof
●220V/1Phase/50HZ。