Speedi-Products WDC08 8-Inch Diameter Stainless Steel Wind Directional Cap with Adapter Speedi-Windcap is made in USA Prevents downdrafts that cause smoke and soot backup Includes an attached storm collar that creates a weather barrier Works great for wood stoves, fireplaces, and fireplace inserts Made of heavy-Gauge stainless steel (304-2B) for superior performance and lifetime longevity