Roof mounted exhausters/ventilators are well-suited for removing heat and lighter than air fumes that rise to the ceiling. Our Models have the motor mounted outside the airstream making this option ideal if the air stream is contaminated or filled with high moisture. Ventilator is designed to provide either exhaust or intake air. All the roof exhauster fans are powder coated using a two-step process to protect against harsh outside elements. The base coat is a zinc-rich primer that offers superior mechanical properties and chemical resistance. The topcoat is a super durable polyester TGIC powder that offers superior outdoor weathering particularly when exposed to sunlight.