Enjoy the warmth and feeling of a wood fire without the need of wood or even a chimney. The Napoleon Fiberglow VF18 Vent Free Gas Log Set uses the existing air currents to circulate the heat it produces and vent itself. The logs themselves absorb the infrared heat from the flames and the heat is radiated back into the room. The Fiberglow VF18 is easy to use. A flip of a switch and you have a cozy fire. Flip it again and the fire is off. No work, no mess. At 99.9% efficient, the Fiberglow VF18 is a fantastic addition to any room. The ambiance of a crackling wood fire is great for a home where the optional fireplace was not chosen, and it installs easily into existing or brand new openings.