Selkirk RV Draft Hood Connector is a versatile transition fitting designed to connect double wall Metalos pipe to the single wall flue collar or draft hood outlet of your appliance. Its flexible shank allows it to be shaped to fit oval outlets easily, ensuring a secure and efficient connection. Measuring 4-1/2 inches in length, the size refers to the inside diameter of the pipe or fitting, with the outside diameter approximately 1/2 inch larger. Made from an aluminum liner with a galvanized steel jacket, this Type B gas vent fitting is UL listed and rated for temperatures up to 550 degrees Fahrenheit. Available in diameters of 3, 4, and 6 inches, each package includes one connector to meet your installation needs. Model Number: