This Master Flow 10 in. x 3-1/4 in. x 6 in. Stack Boot is ideal for creating a straight-line transition between round pipe. The stack boot is made of galvanized steel and installs with sheet-metal screws.
Galvanized-steel construction
Use to create a straight-line transition between round pipe or between an insulated flexible duct and a rectangular stack duct
Installs with sheet-metal screws
Insulate ductwork for system efficiency and comfort
Seal seams with code-approved mastic， sealant or duct tape (not included)
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