A replacement cap for round prefab metal chimneys, that have a wood or metal housing. Removable hood for easy cleaning. Standard 7" center hole with a 1/2" lip that keeps water from rolling into the chimney flue. Animal Proof 3/4" oval hole mesh. Available in five stock sizes. Copper and custom sizes are also available. For a price quote please email us. Made in the USA. Stainless Steel Lifetime Warranty.