... Room-.Kitchen exhaust:Range Hood-.Bathroom exhaust,Dryer booster,Duct booster-.HydroponicsMoror-.Extermal motor-.Voltage / Frequency:115v-120 ... line fan)-.BIO-150-2SS(6" In-line fan)-.BIO-200-2SS(8" In-line fan)-.BIO-250-2SS(10" In-line fan)-.BIO-300-2SS(12" In-line fan ... ) 4",6",8",10",12"duct Fan ...