Master Flow 10 in. x 3-1/4 in. to 5 in. Stack Boot

This Master Flow 10 in. x 3-1/4 in. to 5 in. Stack Boot provides a straight-line transition from specially-sized round pipe or insulated flexible duct to a rectangular stack duct. The stack boot is made of galvanized steel and installs with sheet-metal screws. Seal seams with code-approved mastic, sealant or duct tape (not included).

• Transiton between round pipe or insulated flex duct & stack duct
• Durable galvanized steel construction
• Ideally suited for all HVAC air venting systems