A replacement liner top chimney cap for triple wall air cooled factory-built prefab chimney pipe. Removable hood and screening for easy cleaning. 9" screen height, 3/4" animal proof oval hole mesh. Raised 13" inner ring with a 1/2" lip prevents the water from rolling back into the flue. Copper is also available. Please email us for a price quote. All Stainless Steel Lifetime Warranty Made in the USA.