Aluminum Increaser/Reducer 4” to 3”

  • SKU: DIRB43
  • Connects 3 in. duct to 4 in. duct quickly, easily
  • Ideal for bathroom fan exhaust applications
  • Seal joined edges with duct tape for increased efficiency
  • Use with 3 in. and 4 in. rachet or worm gear clamps to connect duct (sold separately)
  • Description
    This aluminum Duct Increaser/Reducer is an adaptor that allows you to connect 3 in. duct to 4 in. duct.
  • Details
    Duct Type Duct Accessories
    Item Height 3.375
    Item Length (Depth) 4
    Item Weight (lbs) 0.86
    Item Width 4
    Material Aluminum
    Piece Height 3.375
    Piece Length (Depth) 4
    Piece Weight (lbs) 0.86
    Piece Width 4
    Product Category Duct Accessories