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 # LS30B2. Gas Type Natural Gas/Liquid Propane. Four piece log set. Log sets are hand painted. Approved for use in any certified vent-free firebox. LOGs ONLY Birch Log Set. For use with slope glaze burner system. Specifications Overall Dimensions 30 L . Required Must Choose Burner to Complete Log Set. Compatible Burners Vent-Free IP 30 inch Slope Glaze Burner VFSE30N VFSE30P . Vent-Free Manual 30 inch Slope Glaze Burner with Standing Pilot/Piezo VFSM30LP VFSM30NAT . Vent-Free MV 30 inch Slope Glaze Burner with Remote Ready and Standing Pilot/Piezo VFSR30LP VFSR30NAT . Vent-Free 30 inch Slope Glaze Burner with Remote and Variable Flame VFSV30LP VFSV30NAT . Vent-Free MV 30 inch Slope Glaze Multi-Sided Burner with Remote Ready and Standing Pilot/Piezo VFSUR30N VFSUR30P . Vent-Free IP 30 inch Slope Glaze Multi-Sided Burner with Thermostat Variable Remote Control VFSUE30N VFSUE30P . Vented Manual 30 inch Slope Glaze Burner VSM30LP VSM30NAT . Vented MV 30 inch Slope Glaze Burner with Remote Ready VSR30LP VSR30NAT . Burner is shown in image, however not included in this product.