The Master Flow 6 in. x 9 in. 90-Degree Oval Vertical Elbow is designed to change the vertical direction of a run of 6 in. oval pipe in an HVAC system. It serves as an energy-efficient alternative to a stack duct. This elbow is made of 30-gauge， galvanized steel for strength and durability. It can be installed with sheet-metal screws.
30-gauge， galvanized-steel construction for strength and durability
Used to change the vertical direction of a run of 6 in. oval pipe in an HVAC system
Energy-efficient alternative to a stack (riser) duct
Use sheet-metal screws for a proper installation (not included)
Always seal seams with code-approved mastic， sealant or duct tape (not included)
Always insulate ductwork for greater system efficiency and comfort (insulation not included)
Maximum temperature rating of 390 degrees Fahrenheit， minimum temperature rating of -100 degrees Fahrenheit
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