6" X 20' Pre-Insulated Hybrid 316L Pre-Cut Liner. This liner has a smooth 316L interior, which is great for less turbulence and better draft and offers the ability to downsize the diameter of the liner in certain situations. The exterior is 409 Stainless Steel.
WARNING: Carcinogens: This product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.