e-NRG Bioethanol Fuel for Ventless Fireplaces (32 Quarts) Now 16 quarts per box! The only bioethanol approved for use in EcoSmart Fire burners Pours 8x faster than the competition - quart bottle empties in less than 14 seconds! Includes proprietary flame arrester in bottle for the safest fueling possible Uniquely formulated to burn clean with no smoke, no soot, and little to no odor Quick and reliable delivery to your door, easy to use, and simple to store