Uses B-vent pipe or existing masonry or factory built metal chimney as a housing for flexible liner. Uses room air for combustion and venting terminates above the roofline (like a furnace). 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. Can be installed directly over combustible flooring. (except for carpeting or linoleum)