National Chimney M-Flex 6" x 35" Stainless Steel Standard Liner Kit h81 Removable twist-lock clean-out tee cap

Removable twist-lock clean-out tee cap included

Model 6717** Clearance Zero/Zero clearance when installed into a masonry chimney and wrapped with a 1/2" ceramic fiber insulation blanket

*Note: The fireplace's Middle Width must be at least 27 Inches and the Depth must be at least 14 Inches for this gas log set to fit

14038 Series

The black finish adds a touch of sophistication and modernity to the overall appearance of the fireplace

National Chimney M-Flex 6" x 35" Stainless Steel Standard Liner Kit h81 Removable twist-lock clean-out tee capM 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