Your FireFlex Chimney Liner Kit will include a FireFlex 316 .006 thick stainless steel liner 13" x 13" top plate with rain cap and Tee connector with 10" snout clean out cap for horizontal connections. Fireside Chimney Supply's FireFlex chimney lining systems are made of 316 stainless steel and are used for all fuels. Our FireFlex 316 stainless steel stainless steel chimney liner system is designed to reline existing chimneys or to be used in new construction.They are manufactured using the highest grade mill certified alloys. They are manufactured with a continuous strip of stainless steel, interlocked and diagonally crimped to produce a gas and water tight system of superior strength. With 7 ply seams and 10 corrugations between each seam it will deliver the flexibility needed to get the job done. Each FireFlex Kit includes our very own EZ connect system: Top plate or Flue fit top plate (optional) for the chimneys with the clay tile liner, both with EZ connect collars Rain Cap with screen, Tee connector with EZ connect for the horizontal hook-up Lifetime transferable chimney liner warranty Complete installation instructions UL1777 Listed in the USA Underwriter Laboratories The Deluxe Top Kits (flat top plate w/ hinged screen lid) are constructed of 22g 304 stainless steel. The Deluxe Clay Tile Top Kits (for clay tiles w/ hinged screen lid) are constructed of 22g 304 stainless steel. Fireside standard thickness liner is .006. Above industry standards. For Maximum flexibility we also offer .005 thickness for the tough to maneuver jobs. Fireside Chimney Supply offers a complete line of chimney lining and hearth products