Our 316Ti .006 rectangular stainless steel chimney liners are air and water tight. This flue liner has 7 ply seams, rated number one in the industry for strength. Our rectangle chimney liners are UL listed in the United States 1777 and ULC Canada 365. They are made of the very best, hand selected, prime stainless steel material available on today's market. The sizes listed in the drop down box are rectangle O. D. (Outside Dimensions) and pricing is per foot. Videos & Calculators: How to Install a Chimney Liner | Chimney Liner Shape Calculator Note: Rectangle chimney liners and components are custom made to your specifications, and are not refundable. Please call us if you have any questions in regards to your installation! See our Rectangle Chimney Liner Conversion Chart Lead time 1-4 weeks
