A vented/Vent-Free gas log set makes a great alternative to the hassle of building a log fire in your wood-burning fireplace. Just like a wood fire, a vented gas log set provides plenty of mesmerizing flames and flickering light. Vented/Vent-Free log sets are considered decorative systems and must be installed in a vented fireplace. Includes Four Piece Log Set. Features Model # LS18C2. Gas Type Natural Gas/Liquid Propane. Four piece log set. Log sets are hand painted. Approved for use in any certified vent-free firebox. For use with slope glaze burner system. For use with VSM18LP, VSM18NAT, VSR18LP, VSR18NAT, VFSE18N, VFSE18P, VFSM18LP, VFSM18NAT, VFSR18LP, VFSR18NAT, VFSV18LP and VFSV18NAT Burners by Empire Comfort Systems. LOGs ONLY Charred Oak Log Set. Specifications Overall Dimensions 18 L . Burner is shown in image, however not included in this product.