The Master Flow 12 in. x 2-1/4 in. to 6 in. Stack Boot is designed to create a straight line between a round pipe or insulated flexible duct and a rectangular stack duct. This boot is designed with durability in mind and is made of galvanized steel. The stack boot can be installed using metal sheet screws and sealed with a building-code approved sealant or duct tape (screws, sealant and tape not included).
- Made of sturdy galvanized steel
- Stack boot creates a straight-line transition between a round pipe or insulated flexible duct and a rectangular stack duct
- Install using sheet metal screws (not included) for easy installation
- Seal with building-code approved sealant or duct tape (sealant and tape not included)
- Withstands temperatures up to 390 degrees Fahrenheit and temperatures as low as -100 degrees Fahrenheit for HVAC use















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