Replacement Slide Draft Top Damper Cap Vent(DFMT) for Big Green Egg Chimney

Will this fit a Kamado Joe classic?

What is inside diameter of this product? I am looking for something that will fit over the chimney of my vintage Kamodo.

Will this work with the original cap that comes on a large BGE or do you need to buy the cap that is shown with the rain cap??

Do you sell replacement hinges?