Manufactured in Canada, the Vortex Powerfans In-Line Duct Blowers are ideal for use in general purpose exhaust and duct boosting applications. The variable speed control fan kit includes a Vortex Powerfan 739 CFM VTX800 and a Dial-A-Temp speed control. This kit also comes with galvanized mounting brackets allowing either horizontal or vertical installation. VTX800 design features: Supplied with mounting bracket for easy installation. Suitable for airstream temperatures up to 140°F. Aerodynamic design allowing more airflow. Heavy gauge steel casing with a hammertone powder coat finish, making it more sound absorbing, durable, impact resistant and rustproof. High quality maintenance-free balanced motor, making it vibration free, quieter and longer-lasting. Extended collar and lip, allowing easy duct hook-up. Optional speed control easing airflow adjustment, allowing better balancing of the ventilation system. 739 CFM Dial-A-Temp design features: Plug-in ground design - no tools required UL Recognized components Fire retardant thermoplastic enclosure Rugged construction and compact Maximum rating of 300W / 3.0 Amps @ 77°F (25°C) 115 Volts - 50/60 Hz Variable speed to control wood and coal burning fireplace and inline fans On-Off switch, high to low variable No internal wiring - just plug in and enjoy One Year Warranty Helps reduce fan or blower noise FREE SHIPPING