The Master Flow 5 in. Starting Collar is suitable for most HVAC applications. It provides a transition from a flat surface like a plenum (made from metal or lined duct) to round pipe or insulated flexible duct. This model includes a damper to help regulate air flow.
Made of galvanized steel
Helps transition from lined or duct board plenums to round pipes or insulated, flexible ducts
Can be used with an internally lined or unlined plenum or duct
Seal seams with code-approved mastic, sealant or duct tape (sold separately)
We offer flexible shipping and scheduling options, up-to-date delivery estimates, and free ground shipping on any order over $99 to make sure your order gets to you on-time, for less.
Ordered the wrong product? Item damaged in transit? Our 3-step process makes returning products easy – even up to a year after purchase – with no restocking fees on returns made within 90 days.