Premium 316L Stainless Steel for Maximum Durability & Safety: Engineered with high-grade 316L stainless steel, this FireSafe Chimney Liner Kit offers exceptional strength and flexibility. Its 7-ply seams and 10 corrugations create a gas- and watertight barrier, helping prevent chimney fires and carbon monoxide leaks while ensuring long-term structural integrity. Complete Kit for Effortless Installation: Includes a 13" x 13" top plate with a rain cap, a .006" thick stainless steel liner, and a tee connector for horizantal hookups. This all-in-one kit ensures a secure, moisture-resistant installation, preventing corrosion and costly repairs while improving chimney performance. Enhanced Draft & Energy Efficiency: Designed to optimize airflow and combustion, this chimney liner system improves the efficiency of wood stoves, fireplaces, and furnaces, reducing creosote buildup and enhancing heating performance for wood-burning stoves, gas inserts, and pellet stoves. Versatile, Code-Compliant Solution for Any Fireplace Setup: Compatible with wood, gas, oil, and pellet appliances, this stainless steel chimney liner meets modern building codes for enhanced safety and fire prevention. Ideal for fireplace inserts, wood stoves, and gas appliances, offering long-term protection and peace of mind. Proudly Made in the USA – Built for Lasting Quality: Manufactured in the USA using mill-certified stainless steel, this heavy-duty chimney liner kit provides superior strength and resistance to moisture and corrosion. An investment in quality craftsmanship, designed to extend your chimney’s lifespan and minimize maintenance. 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 chimney liner system is designed to reline existing chimneys or be used in new construction. Manufactured using the highest grade mill certified alloys. 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. Sometimes when using the option of ovalizing the smooth wall liner it may have a puckered appearance. This will in no way affect the performance of the liner. 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, 2 part stainless steel tee with removable snout 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 smoothwall liner is .013 thick. Above industry standards. Fireside Chimney Supply offers a complete line of chimney lining and hearth products.