Dayton standard duty exhaust fans are suitable for ventilation in warehouses, factories, plants and offices. These units have 6-blade, galvanised steel propellers tha move large air volumes at low static pressures (0.125 inches or less) to offer strength and reduce sound levels. These fans also feature totally enclosed nonventilated motor enclosures (w/o openings or external fans) and depend on a simple convection method for heat dissipation from the motor frame. They feature belt-driven design that allows flexibility in fan speeds and CFM to optimise fan's performance. The complete assembly includes the motor, belt, bushings and sheaves (packed separately) and can be easily mounted in either horizontal or vertical position. Choose from a wide range of these standard duty exhaust fans, available in fan speeds ranging from 621 to 1221 rpm.