Metal Sort Production is giving air control dampers for that commercial and lightweight industrial markets since 1967. Control dampers are offered with parallel or opposed blades in either the field common triple “V” groove design and style or Airfoil design. Look out for uneven heating or cooling, Odd noises from https://aircontroldampersforhotcl13445.thekatyblog.com/35153877/facts-about-air-control-dampers-for-hot-climates-revealed