Our Copper Vent Stack is available in many sizes. Made for applications in which the connection to the vent stack is made below the roof line. Manufactured out of strong 16 ounce copper. Pitched to customer's specifications.Copper Vent Stack / CapMade of strong 16 ounce copperAvailable with 1.5", 2", 3", and 4" bronze fittings12" copper stackPitched to customer specificationsThis vent stack is designed for an application in which the pipe connection is made below the roof line. If your vent pipe is already coming up through your roof line please look at our Vent Pipe Flashing with Fernco Coupling or the Roof Jack Vent.