Dayton supply ventilators are roof-mounted, designed for exhaust or supply of clean air in industrial and commercial facilities. These units feature heavy gauge galvanised steel construction for durability and corrosion resistance. They also include a watertight hood, made of interlocking arched galvanised panels, providing proper access to motor & drives. These hoods come with a bird screen to protect the opening from birds and contaminants. The complete assembly includes housing, fan and drive packages (shipped separately) to customise as per requirement. Choose from a wide range of these supply ventilators, available in 3/4, 1-1/4 & 1-3/4 inch bearing options.