Wisconsin Outdoor - Model 7400MP -Crown Royal Multi Pass System

Assisting in ensuring each burn cycle is cleaner and more efficient, the Turbo Draft System introduces fresh air above the flame, forcing secondary gases downward to be burned before making their way into the triple pass heat exchanger. When secondary gases are ignited temperatures of the fire drastically increase making the burn more efficient, simultaneously increasing heat recovery, all while lowering the possibility of creosote buildup from gases that escape up the chimney.