So I've seen a few different ways that people do this. Some use cement, sealant, metal tape, other aeronautical tape.... so what is the proper way to get a draft free permanent seal? I'm looking at relocating the blower on the 30 so it accessible for maintenance when this season is done. The liner will have to be loosened/raised to do this. So when I reconnect it what is the proper way to do this? Also for those of us with a tight fitting liner that doesn't easily move up and down why don't they have some sort of slip joint at the stove that would make removal easier. This will be a small battle all in it's self to get the liner to raise 2"-3" to remove the stove. I'm also thinking of an offset box but have yet to see one that is draft free or air tight. Any recommendations? Any reason these need to be stainless? I'm almost thinking a guy could weld one up out of steel if he could get his hands on some 6" round collars. Wouldn't be that hard to do?