CharKing Fire Logs 6 Count

2 hour flame(a). Burns cleaner than wood*. Up to 75% less particular matter*. Up to 80% less carbon monoxide*. Burns up to 2 hours(a). For United States, this firelog has been tested by Underwriters Laboratories Inc. for use in factory-built fireplaces. For Canada, this firelog has been designed for brick or heavy gauge metal lined masonry fireplaces, UL or CUL or ULC listed fireplaces and fireplace inserts having minimum burning areas of 400 sq. in. (0.258 sq. m.). Use in smaller appliances may be hazardous. (a)Variations in fireplace and climatic conditions may alter duration of burn. *15th Emission Inventory Conference, New Orleans, May 2006. Unconditional Guarantee: If for any reason you are not completely satisfied by your purchase, simply return the product with proof of purchase for a replacement or refund, whichever you prefer. We welcome any comments or questions you may have. When writing, please include the 12 digit UPC number. Questions? 1-888-423-0139. UL Classified: Processed solid fuel classified for use in factory-built fireplaces 7L47. 1-888-423-0139. This firelog is made from recycled biomass product such as wood sawdust, ground tree nutshells, and blended wax.