G.A.S Revolution Stratos ACRevolution Stratos AC The Revolution Stratos AC is an energy efficient in line fan with a 230V AC rotor motor, perfectly suited to grow room environments. Ventilation expert Systemair designed aerodynamically optimised impellers and guide vanes to increase air flow, all while producing lower decibels than most other AC fans on the hydroponics market. The Revolution Stratos AC is quieter and smaller than other traditional duct fans, and handles air