National Chimney M-Flex 3" x 15" Stainless Steel Standard Liner Kit h99 2-Sectional Chairs

2-Sectional Chairs

Timer Control Option

Jardin Rectangular Rug

Model 9400440813SS Material Stainless Steel Diameter 4” x 4” Size W 8" x D 13" x H 11" Clearance UL and ULC listed to 1777 standard

Fuel Type: Fueled by natural gas only

National Chimney M-Flex 3" x 15" Stainless Steel Standard Liner Kit h99 2-Sectional ChairsM 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