American Fireglass 10-Pound Reflective Fire Glass with Fireplace Glass and Fire Pit Glass, 1/4-Inch, Gray #1 brand of Fireglass since 2004. American Fireglass can be used for indoor or outdoor purposes and is designed for use with natural or propane gas fire features. Each piece of glass has a consistent, brilliant, bright color throughout and burns clean with no soot, ash or smoke. Unique 6-step Quality Process to ensure impeccable performance your family can trust while providing an elegant appearance. Limited Lifetime Warranty