Duraflame Illuma Bio-Ethanol Log Set Requires the use of only Duraflame Illuma Bio-Ethanol Fuel Canisters Spill-proof illuma-fuel liquid bio-ethanol canisters. No pouring required. Seal is punctured on bottle and fuel is released into fuel reservoir. Easily fits in existing open hearth fireplaces, no special installation required No smoke, burns with ultra-low emissions The log set can be refueled during use by simply lifting the hinged door and swapping out the fuel canisters Requires the use of only Duraflame Illuma Bio-Ethanol Fuel Canisters Spill-proof illuma-fuel liquid bio-ethanol canisters. No pouring required. Seal is punctured on bottle and fuel is released into fuel reservoir. Easily fits in existing open hearth fireplaces, no special installation required, Illuma systems use a unique and safe, patent pending steady flame fuel burner No smoke, burns with ultra-low emissions The log set can be refueled during use by simply lifting the hinged door and swapping out the fuel canisters