• Bottom Flange = 31" Square
  • Roof Opening = 24" Square
  • Curb Height = 12"
  • Made In The USA
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      Roof Mount Damper View larger

      20" Opening Back Draft Damper

      BD29A

      New

      • Airmaster Fan Model BD29A
      • Backdraft Damper 21-3/4" Square
      • For 20" Square Opening
      • Wall or Roof Mounted
      • Gravity Close
      • EDP 32455  UPC 783429324550
      • Made In The USA

      $234.00

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      4 Items