Duraflame Illuma Bio-Ethanol Fuel Unique bottle design, specifically for use in duraflame illuma brand products No spill, no pour bottles, easy fit in burner. Fuel is fully contained in sealed bottle, seal is punctured when bottle is inserted into burner system Child resistant cap and bittering agent in fuel provide added safety Illuma-fuel bottles do not get hot while the fireplace is in use and can easily be removed and replaced while the fire is burning Each bottle contains 1 liter of denatured bio-ethanol and produces up to 2 hours of clean, smoke-free flames (sold in 6-ct cases for up to 6 fires)) Unique bottle design, specifically for use in duraflame illuma brand products No spill, no pour bottles, easy fit in burner. Fuel is fully contained in sealed bottle, seal is punctured when bottle is inserted into burner system Child resistant cap and bittering agent in fuel provide added safety Illuma-fuel bottles do not get hot while the fireplace is in use and can easily be removed and replaced while the fire is burning "Each bottle contains 1 liter of denatured bio-ethanol and produces up to 2 hours of clean, smoke-free flames (sold in 6-ct cases for up to 6 fires)"