The DECENT MACHINERY Blower Company has over 100 years of experience providing fans for the demanding applications found within the automobile industry. Whether it's combustion air, oven recirculation or spray booth exhaust, DECENT MACHINERY has the fans required to handle these rigorous applications. Engine test cells and aerodynamic testing all use various DECENT MACHINERY fans. The high-density manufacturing in automobile assembly plants require high levels of fresh air supply and exhaust for the personnel areas. These often involved downdraft systems with high-pressure ventilating fans located in rooftop enclosures.