SKU: FLCL405 4"x 5 ft Single Ply Chimney Liner

Engineered for superior flexibility, this single-ply chimney liner features more ribs 

between seams than any competing brand—over twice the flex rating 

for easier installation in tight flues. Seven-ply quad-knurled locked seams ensure

 a leakproof, airtight, and watertight seal with unmatched mechanical 

integrity. Fabricated from premium 316-L .006 stainless steel, it's compatible with 

oil, gas, wood, and pellet heating systems (excluding coal). Independently 

tested and approved to UL 1777 zero-clearance standards, this liner guarantees 

optimal safety and performance for demanding venting applications.