National Chimney M-Flex 8" x 25" Stainless Steel Standard Liner Kit w5.74 Ceramic glass front allows heat

Ceramic glass front allows heat to easily transfer into your living space and provides a clear view of your fire

Ceramic glass provides optimum visual clarity

Sedona Narrow Ledge Round Fire Pit in GFRC Concrete is a beautiful high-end fire pit that is perfect for both

Can be used as a common patio table when the lid is covered

National Chimney M-Flex 8" x 25" Stainless Steel Standard Liner Kit w5.74 Ceramic glass front allows heatM FLEX standard liner kits are used for wood, oil, coal, and gas appliances. Each of our . 006" (CB) and . 005" (CBF) standard kits comes with installation instructions and a lifetime warranty. This lining kit has been installed in venting applications since 1992 and continues to be the most popular "all fuels" kit we offer. We stock 3" 8" inside diameter (ID) as well as 6" 8" outside diameter (OD) in our . 006" (CB). What's Included 1x Installation