Is this a good liner? Premier Flex Lite

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Sol

New Member
Mar 8, 2025
1
Maryland
From National Chimney's product description:
"As the chimney industry changes, National Chimney adapts to fulfill our customers' needs. Premier Flex Lite Liner has the same quality and technology as our standard Premier Flex Liner except it is much lighter. It is constructed of .010" thick steel as opposed to the standard heavy wall .015" thick steel. The thinner steel has the durability of the heavy wall liner but at a more manageable weight. Offered in 304 and 316 L/Ti. See our M-Flex Smoothwall Chimney Liner, if you need a liner that reduces sizing by 20%."

I'm concerned this is the 2-ply stuff everyone hates. Anyone use this and had it a few years with a camera up the liner to confirm it's structure?
 
From National Chimney's product description:
"As the chimney industry changes, National Chimney adapts to fulfill our customers' needs. Premier Flex Lite Liner has the same quality and technology as our standard Premier Flex Liner except it is much lighter. It is constructed of .010" thick steel as opposed to the standard heavy wall .015" thick steel. The thinner steel has the durability of the heavy wall liner but at a more manageable weight. Offered in 304 and 316 L/Ti. See our M-Flex Smoothwall Chimney Liner, if you need a liner that reduces sizing by 20%."

I'm concerned this is the 2-ply stuff everyone hates. Anyone use this and had it a few years with a camera up the liner to confirm it's structure?
It sounds like midweight liner which is good
 
The Premier flex or Premier flex-lite look good. The M-Flex is ok, but it's thinwall, not as good as the premier. It's the M-Flex Smoothwall chimney liner that is 2-ply.