DuraVent DVL 8" Diameter x 6" Long Double Wall Adjustable Length Black Pipe

The DuraVent DVL 8" diameter by 6" long adjustable length black pipe section is used to add 2" to 11" of length to the stove pipe run.  DVL double wall stove pipe can not be cut to length, so the 6" adjustable length provides 2" to 5" of adjustment for you to align the stove pipe run perfectly. For example, if you're installing a wood burning stove and plan to go through the wall with the chimney, you might need an adjustable length on the vertical run to ensure you can line up the height of the 90 degree elbow perfectly with the opening on the wall thimble.  Similarly, you might need a second adjustable length to ensure you can get the proper length from the elbow to the single wall to double wall adapter when making the transition to Class-A chimney pipe. Similarly, if you're installing a wood burning stove and plan to exit through the ceiling, you will likely need an adjustable length to ensure you can line up with the ceiling support box properly. DVL has a .016" stainless steel in