All AirFlo Cooling Technologies louvers use a bolted connection between the blade horn and the actuator rod. Heavy duty spring loaded manual operator will provide years of service. Engineering and trained customer service professionals assure order accuracy and that Airflo louvers comply with all applicable industry specifications. Welded aluminum side frame construction offers AirFlo Cooling Technologies customers the choices to match assembly methods to their needs for a wide variety of applications. Optional deep frame louvers allow clearance for all operating mechanisms and enclose the blades to ensure that screens or covers will not interfere with the opening and closing of the louver blades. Unique blade pin bushing design prevents rotation of the bushing in the frame, eliminating wear between the bushing and the frame. The 3000 Watt Laser Cutter allows customization of louvers to meet your needs without the time and expense of dedicated tooling and dies. Linkages use a clamp type connection to the torque tube for both 1 inch steel pipe and 2 inch aluminum style torque tubes.