Item Condition New Item Location Ships from our warehouse in Las Vegas, Nevada, 89102, USA Fast FREE Shipping We handle all paid orders within 1 business day. Best Offers Accepted Offers are reviewed at the close of business each night. We accept reasonable offers for - Multiple units of the same item - Errors or condition changes within our listing - Combining shipping for 2 or more separate orders Return Policy We offer a 30 day return window from when you receive the item. Items must be in the same condition and in original packaging. Product Description The Master Flow 16 in. Starting Collar has a snap-together design for easy assembly. This starting collar can be used to transition from a flat surface such as a lined or duct board plenum to round pipe or insulated flexible ducts. Can also be attached to metal surfaces. Made of galvanized steel, this starting collar is made for durability. The 2 in. space between the bead and flange provides you with plenty of space for securing an insulated flexible duct. Made of galvanized steel Helps transition from lined or duct board plenums to round pipes or insulated, flexible ducts Can be used with unlined, metal plenums Snap-together design 2 in. between bead and flange allow space for securing insulated flexible duct