Exhaust is vented out through the inner pipe.
Convenient to install and more economical. Suitable for well-insulated homes or homes with no existing chimney. Uses B-vent pipe or existing masonry or factory built metal chimney as a housing for flexible liner. Relatively easy to install. Ideal for replacing an old wood stove, positioning a stove in front of a fireplace, or locating a stove anywhere in the home where B-vent can be installed.