A quiet blower fan kit with smart controls, designed to boost airflow coming from your fireplace. Dynamic temperature and humidity programming, with timers, cycles, scheduling, and minimum speed. Remotely connect via our WiFi app to access advance programs, alarms, notifications, and view climate data. Features a DC-motor controlled using PWM for a truly quiet and energy efficient performance. 15.3 x 4.0 x 3.6 in.