21 In.H 21 In.W Drnbl Extrd Alu Combo Dmpr, Louver Type Combination, Frame Type Flanged, Outside Height 17 1/2 in, Outside Width 17 1/2 in, Rough Opening Height 18 in, Rough Opening Width 18 in, Louver Maximum Intake 779 cfm, Maximum Exhaust 1,114...

In stock
  • RevType
  • 2
  • Manufacturer
  • DAYTON
  • Sku
  • 20UA21
  • Identity
  • 6067471704

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