So does it matter how it’s made as far as size? If I have my research right. The bottom should be at bottom grate height and the top is at the top grate. Also the bottom should be 45 degree angle so it’s not a hard turn into exhaust. Do I have that right?. I like the wider design of #1 in my pic. Would the smaller help flow or hurt flow? Does it even matter? Do I have the height of it correct or should it be shorter or taller?
Attachments
Last edited: