Pre-Insulated Forever Flex is manufactured from 430 stainless steel in the outer skin and 316Ti inner stainless steel liner.

It comes ready to install with Olympia Chimney Supply's non-carcinogenic Super Wrap Insulation Blanket already wrapped around the liner. It is convenient for the installer; saving both time and money.

The outside dimensions is 2" larger than the inside dimension.

It carries the Forever Warranty, is UL/ULC listed, has 0 to 0 clearance within a masonry chimney.

The liner kit includes: 316Ti liner, 430 stainless steel outer wall, Super Wrap Insulation Blanket, chimney cap with screen & wind guard, 13" x 13" top plate, and the appliance connector.