Duluth Forge ventless gas log sets have all the details and features of high-end log sets at a great price. These logs are cast in concrete from real wood for amazing detail. These gas log burners are designed and manufactured to the highest standards for innovation and technology. This vent-free gas log set heats the air first, circulating the warmth through the room, much like your central heating system. This gas log set includes features an easy-to-use manual control system and an electronic spark ignition for easy operation.