Comfort Glow, 24", T-Stat Vent Free Gas Log Set, 30,000 BTU's, Dual Fuel Natural Or LP Gas Connection, Dual Burner System, 6 Piece Painted Black Forest Concrete Logs, Dual Yellow Flame, Oxygen Depletion System, New Smart Select Knob Provides Easier, Faster Installation, No Electricity Required, Includes Lava Rock, Heats Up To 1,250 SQFT.