My first question is where around the Cleveland Ohio area is the best place to buy the pipe to install one of these. I have heard that there are places that wholesale to contractors...anyone know? Second is it better to use a triple wall pipe in an existing masonry chimney or can I get away with a single or double? This chimney is on the outside of the house and not the middle so it will be cold. Third I am putting this next to my furnace but there is a wall between where it is going and the existing chimney. Is it better to come up a little bit and use a 45 and put a good slope on the pipe or come up farther and use a 90? And will a small stove draft through the necessary two 90s and either a third 90 or 45? Any help is greatly appreciated.