Hi everyone. I need a little guidance on installing my tiny all nighter woodstove. The building is a smaller 400 square-foot pool house built in the 1950s. It has a masonry chimney. Looks to be in really good condition and hardly used. The chimney is approximately 20 feet high from top to bottom and the stove will be in the basement of the small house. I would love to not have to put a new stainless steel liner in if I can get away with it. The dimensions of the flue looks to be about 8 1/2 inches round in circumference. Here are some photos and advice is greatly appreciated.