A Damper Is A Valve Or Plate That Stops Or Regulates The Flow Of Air Inside A Duct, Chimney, VAV Box, Air
Handler, Or Other Air-handling Equipment. A Damper May Be Used To Cut Off Central Air Conditioning
(heating Or Cooling) To An Unused Room, Or To Regulate It For Room-by-room Temperature And Climate
Control. Its Operation Can Be Manual Or Automatic.