Excellent High Quality Chimney Cap Used to Provide Maximum Draft While Preventing Downdraft in High Wind Environments. This high quality, proven chimney cap pivots with the wind to keep rain and wind from entering your chimney and complicating your stove's draft. The sizes below are designed to fit the outer diameter of your stove pipe. 

Benefits 

Increases efficiency of stove or fireplace. Constructed for strength and durability.