This is the new Perfect Draft Flex hose with clamps it connects on our new adapter. "Note If you have a metal adapter this flex hose will attach to it , There is no need to buy another meal adapter " This is design for large barbecue smokers with XXL Fire boxes. But it can be used with any size off set smoker firebox. It protects the Blower unit and gives you the flexibility to keep your blower out of the rainy weather. It is a Great accessory for your Perfect Draft BBQ..