National Chimney M-Flex 7" x 25' Stainless Steel Standard Liner Kit d22.625 Creates a smooth transition for

Creates a smooth transition for an undisruptive flow

creating a beautiful display of YELLOW DANCING FLAMES®

The homeowner can control both the volume of air and the direction of air with these unique products

2in [2850mm] Height 31

Model C-48-ST-UB-T2 Material Ceramic

National Chimney M-Flex 7" x 25' Stainless Steel Standard Liner Kit d22.625 Creates a smooth transition forM 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