BARN VENTILATION SYSTEMS Aerotech Vortex Barn Fan Cast aluminum 3-blade airfoil propeller and new profile for higher airflow and efficiency Streamlined fiberglass housing designed for maximum efficiency State-of-art shutter design using counter-weighted airfoil blades, intake channel and weather-tight seals Stainless steel hardware and fasteners New fiberglass Rifled discharge cone directs airflow for increased efficiency Aircraft design drive support for minimum airflow resistance and increased efficiency 51" & 55" model features high quality pillow block bearings 51" & 55" model includes advanced drive system and high quality belt tensioner Single phase, 3 phase, 2 speed and 50 hertz motors available for most models Aerotech Advantage Barn Fan Models: 9-24" Direct Drive; 36" Belt & Direct Drive; 48" Belt Drive Certified CFM/Watt air performance ratings authorized by BESS Lab Tapered housings and extended cones smooth airflow and dramatically improve efficiency Housing bottom slopes out toward exterior drain holes to keep building drier Stainless steel hardware ensures maximum corrosion protection PVC coated guards are durable and easy to clean. Aerotech WF50/WF54 Barn Fan Cast aluminum drive assembly utilizes enclosed automotive-style bearing and comes with a 7 year limited warranty Automotive-style belt tensioner promotes top performance Corrosion resistant stainless steel propeller, durable enough to withstand harsh environments Fan housing features formed galvanized steel perimeter for added strength, rigidity and wide flange for easy installation Single or 3 phase high efficiency motor Option of plastic or aluminum shutter The MONO-STRUT offers strength and durability in a simple design Aerotech Apex Barn Fan Models: 36" direct and belt drive & 48" and 51" belt drive Heavy-gauge galvanized-steel panels and supports provide outstanding value in noncorrosive environments Cast-aluminum 3-blade airfoil design propellers feature a limited lifetime warranty AeroLink Plus belts reduce vibration, wear and stretching for longer life and eliminate the need for a belt tightener If a tightener is preferred, a simple automotive-style is offered, designed for long wear and durability in harsh environments Single phase motors with high-efficiency, capacitor-start/capacitor-run features reduce operating costs Three phase motors are high-efficiency and designed to work with adjustable frequency drives for speed control High strength galvanized tubular struts provide superior rigidity High quality, greaseable, cast iron pillow block bearings assure longer life Single phase, 3 phase, 2 speed and 50 hertz motors available for most models Aerotech Grower Barn Fan 18" to 48" models High strength galvanized tubular struts provide superior rigidity Motor/bearing mounts feature parallel "L-beam" design for solid stability with minimal airflow resistance Aerodynamic propellers deliver high airflow and efficiency Motors are totally enclosed for protection from the environment. Even the internal wiring connection box is sealed AeroLink Plus belts outperform conventional belts by resisting vibration, wear and stretching for a long life Plastic shutters open easily with minimal airflow resistance, yet close tightly to prevent air leaks Aerotech Panel Barn Fan Fiberglass panel fan with stainless steel hardware is ideal for harsh or corrosive environments Galvanized panel fan with variable speed motor and zinc plated hardware provides economical ventilation in non-corrosive environments High CFM/Watt efficiency means lower electricity costs Propellers are cast-aluminum and individually balanced for smooth, efficient airflow Recirculation guard kits mount easily on both sides of the fan Aerotech Pipe Barn Fan High efficiency variable speed motor reduces operating costs White PVC air pipe for harsh or corrosive environments Easy installation for a variety of applications 15" fan has two aluminum hanging clips bolted to top of housing Cast-aluminum propeller is individually balanced for smooth operation Stainless steel hardware ensures maximum corrosion protection Inlet and outlet guards for safety