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M-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).
| Item Number | CB425BK |
| Brand Name | National Chimney |
| Collection | M-Flex |
| SKU | CB425BK |
| Liner Type | Standard |
| Product Category | Liner Kit |
| Primary Material | Stainless Steel |
| Diameter | 4" X 25" |
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10 Years Warranty |
Ships within 48 hours · Estimated delivery Jul 15 - Jul 20
US$40
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