Duraflame fire logs provide a robust. Convenient and authentic fire experience. Tonight's the Night! Burns Cleaner Than WoodDuraflame fire logs light faster and burn more completely than firewood, and because far less material is consumed when burning a fire log, significantly fewer pollutants are emitted than a comparable wood fire.80% less fine particles**75% less carbon monoxide**90% less hazardous air pollutants**Saves TreesA Duraflame fire log consumes 80% less material than a comparable 1-2 hour wood fire, and burning fire logs instead of wood results in significantly fewer trees cut down for use as firewood.Recycled & RenewableDuraflame fire logs use recycled and renewable wood sawdust and agricultural fibers, saving valuable natural resources. The renewable fibers are mixed with blend of wax and other combustible, renewable materials. If your fireplace is functioning properly, emissions of this fire log should be vented outdoors when they dissipate in the air. A properly installed and maintained fireplace and chimney will substantially reduce the possibility of combustion by-products entering your home. If you suspect be consulted. The Chimney Safety Institute of America (CSIA) recommends that your fireplace and chimney be inspected annually. For a list of CSIA Certified Chimney Sweeps® in your area visit www.csia.org/duraflame. UL Classification MarkProcessed Solid Fuel For Use in Listed Factory-Built Fireplaces. Duraflame Fire Logs are Suitable for Use in UL Listed Factory-Built Fireplaces. Fast Lighting - Lights Fully in Less Than 5 Min. Burns Cleaner Than Wood Burns Over 1.5 Hours* Tonight's the Night America's #1 Fire Log Brand