Made in the U.S.A. by a team of experts, the right Vacu Stack product can solve any chimney issue you may have. Vacu Stack creates some of the most trusted products on the market. And this Vacu Stack 3" Diameter RainSeal T316 Chimney Cap is no different. Extra rain protection for round chimneys other than air cooled and for masonry chimneys using the ICP masonry adapter. This is the premier cap for solving common wind-related chimney draft problems caused by conditions such as hills and mountains in the vicinity, tall trees near the chimney, or tall buildings nearby. What's Included Built-In Rain Collar Not Included (Sold Separately) Screen Features For round chimney flue Protects your chimney from the elements Designed to work with Class A chimney components Specifically designed to combat wind related drafting issues Specifications Item Number VSS-03RS Lid Size 13" Inner Diameter 3" Material 316 Stainless Steel Warranty Limited Lifetime Warranty Videos Documents & Files Size Chart