Manufactured in Canada, the Vortex Powerfan dryer booster kit includes a 220 CFM VTX400 inline blower, for 4 in. Dia duct, and a current sensor that will automatically turn on and off the Vortex VTX400 inline blower as required. In a clothing dryer application, when the dryer is turned on, the VTX400 will automatically turn on and will stay on until 5 minutes after the dryer is tuned off. This will allow the dryer to perform better and more efficiently. Both, drying time and power consumption are therefore reduced.