National Chimney M-Flex 3" x 25" Stainless Steel Standard Liner Kit liquid-propane Multi-Function: Flame effect can be

Multi-Function: Flame effect can be controlled independent without heating

Ensures long service time with premium aluminum alloy

but it will also protect you and yours from sparks while enjoying your outdoor fireplace

Stove Adapter-Standard

National Chimney M-Flex 3" x 25" Stainless Steel Standard Liner Kit liquid-propane Multi-Function: Flame effect can beM 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