America's no. 1 Firelog brand. Fast lighting - lights fully in less than 5 min. Burns cleaner than wood. Burns up to 4 hours (Variations in fireplace and climatic condition may after duration of burn). Tonight's the night. Duraflame firelogs provide a robust, convenient and authentic fire experience. Tonight's the night! Fast lightning - lights fully in less than 5 min. Burns cleaner than wood. Designed for use in indoor open-hearth fireplaces. May also be used in an outdoor fireplace or fire pit. FireWise. Burns Cleaner than Wood: Duraflame firelogs light faster and burn more completely than firewood, and because far less material is consumed when burning a firelog, significantly fewer pollutants are emitted than a comparable wood fire. 80% less fine particles (Source: Dec. 2005 Environment Canada/US EPA Reg. 5 Content and emission characteristics of artificial wax firelogs). 75% less carbon monoxide (Source: Dec. 2005 Environment Canada/US EPA Reg. 5 Content and emission characteristics of artificial wax firelogs). 90% less hazardous air pollutants (Source: Dec. 2005 Environment Canada/US EPA Reg. 5 Content and emission characteristics of artificial wax firelogs). Saves Trees: A duraflame firelog consumes 80% less material than a comparable 3-4 hour wood fire, and burning firelogs instead of wood results in significantly fewer trees cut down for use as firewood. UL listed. Classified. See details on UL classification marking on enclosed product. Chimney Safety Institute of America (CSIA): Accepted Product. When used according to the manufacturer's instructions, this product is accepted by the Chimney Safety Institute of America. For improved safety and home heating efficiency, CSIA recommends that all chimneys and vented appliances be inspected every year by a CSIA Certified Chimney Sweep. For a list of qualified sweeps in your area, please visit www.csia.org/duraflamne or write to 2155 Commercial Drive, Plainfield, IN 46168. www.duraflame.com. Air quality advisory (Nov - Feb). Use of this and other solid fuels may be restricted at time by law. Please check 1-877-4No-Burn or http://www.8774Noburn.org before burning. Recycled & Renewable: Duraflame firelogs use recycled and renewable wood sawdust and agricultural fibers, saving valuable natural resources. The renewable fibers are mixed with blends of wax and other combustible, renewable materials. This box is SFI certified. Sustainable Forestry Initiative: Certified fiber sourcing. www.sfiprogram.org. This corrugated fibreboard has an edge crush test of not less than 32. International Paper. Memphis, TN. Corrugated recycles. Made in USA.