3" High Wind Top

Selkirk 3RV-HWT - 3" High Wind Top. Used in high wind environments. Improves flue gas flow to prevent downdrafts. 3" X 8" X5.5.5". Size refers to the inside diameter of the pipe or fitting. The outside diameter of RV is approximately 1/2'' larger. Outer material is 28 GA galvanized steel. Inner liner is aluminum.