These Aged Oak ventless gas fireplaces mimic a real wood burning fireplace. See more at: http://www.grill-repair.com ! Unvented gas logs do not need a chimney ventilation and are safe in the home. Oxygen sensors, carbon-reducing fireplace log patterns and thermocouple sensors make vent-free gas fireplaces riveting indoors, safe to use, simple to install and very affordable. Ventless gas fireplaces have become very realistic and accessible at affordable pricing.