6" X 18" Rhino Rigid 304L-Alloy Stainless Pre-Cut Chimney Liner - RL304-0618
This chimney liner features a smooth interior for less turbulence and better draft. The expanded ends allow for better air flow, and the smooth-weld seams seal gases and moisture completely while keeping pipes perfectly round.
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.