A Single Sided B Vent Fireplace is the traditional viewing style for a fireplace and can be viewed from the front only. A B-Vent (or Natural Vent) Fireplace uses air from the room for combustion. After combustion, exhaust gases are vented out through the vent. The vent can be run up through a chimney or vented our a roof or sidewall. Single Sided B-Vent Fireplaces are less efficient than Single Sided Direct Vent Fireplaces, but are generally considered more decorative and require a mantle or surround to be installed. B-Vent Fireplaces are ideal for those who are looking for less heat and more aesthetic qualities. Call us today at (877)669-4669 to discuss options with a knowledgeable Fireplaces Now representative.