Gas Logs burn cleaner than smoke-producing wood fires, reducing pollution. Their beauty and warmth provide comfort and pleasure for as long as you own your home. A set of gas logs consists of a gas burner covered in manufactured fire wood made from fireproof molded refractory cement, extruded bisque ceramic clay or molded ceramic fibers, depending on the manufacturer and model. Whether vented or vent-free, they are a great way to enjoy a fire in an existing wood fireplace and are a good choice for a fire with little mess or environmental impact. Gas logs will save you the work of cutting, hauling and cleaning up after wood logs.