The 50'' is a high output and high efficient fiberglass exhaust fan, it can produces 26,400 CFM or 25 CFM/watt at "0" static pressure. The fans can also be run with an optional variable frequency drive that allows you to run the fan from high speed down to 10,000 CFM(5,000 CFM on the 50'')on low speed using only 500 watts(300 watts on the 50'')of power. The thick fiberglass housing is strong, corrosion resistant and easy to clean, Our fiberglass discharge cone does not stick out as far as conventional exhaust fans, This reduces the wind scoop effect of the large cones which significantly affects the performance of the fan when wind blows against the fan. Most roofs overhang our fan, where large cones stick out and can be sheared off our damaged by falling snow, ideal for tunnel ventilation or exhaust in dairy, poultry, swine, greenhouse, factories and warehouses.

※ High performance and innovative design.
-Heavy galvanized motor mount straightens the air as it is propelled through the venturi.
-Extremely quiet operation on all speeds.
-Automatic belt tensioner.
-Totally enclosed high efficient motor.
-Easy to remove plastic shutter design.
-Heavy corrosion resistant fiberglass housing.
-Shipped fully assembled except of discharge cone and guard.
-Heavy duty pulley and bearing assembly.
-Optional soft start variable frequency drive increases bearing, belt and motor life.

※ Features
-Balanced 50''heavy duty corrosion resistant 6 paddle aluminium.
-On high speed produces 26,400 CFM and 25 CFM/watt at "0" static pressure.
-On low speed produces 5,000 CFM and 20 CFM/watt at "0" static pressure.
-Optional variable frequency drive allows you a smooth speed adjustment from 450 RPM down to 80RPM.Fan power consumption reduces with speed. Make sure you have a minimum shutter opening on low speed of "1".

※ Technical Specifications