The heartland oak vented log set recreates the look and feel of a real wood-burning fireplace. This Natural Gas Logs was molded from real wood providing a realistic appearance that incorporates charring, deep bark texture, and split accents. The U-Burner chassis design provides multiple rows of flames which brings you the most realistic flame patterns. Like a real wood-burning fireplace, the heartland oak requires a fully functional chimney with an open flue when in use. The glowing embers create the most illuminating beauty of a warm and classical ambiance.