Just one, they prevent the overheating of combustibles adjacent to the chimney. Two, they make the chimney far more immune to the corrosion generally introduced about by byproducts of burning wood. Air cooled chimneys are much less high priced to install and buy as compared with most other sorts of https://chimney-repair53297.fare-blog.com/28186577/an-unbiased-view-of-best-electric-fireplace-insert