Item Condition New-Open box In excellent condition. Never been installed. With signs of scuffing. 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 This Master Flow 3-1/4 in. x 10 in. Rectangular Stack Duct Starting Collar is made of durable, galvanized steel. It is used to transition from plenums (duct board or lined) or a flat surface to 3.25 in. x 10 in. stack duct. It installs easily with sheet-metal screws. Use to transition from ductboard plenums, lined plenums, or flat surfaces to 3-1/4 in. x 10 in. stack duct Installs with sheet-metal screws Insulate ductwork for system efficiency and comfort Seal seams with code-approved mastic, sealant or duct tape (not included)