Tempered glass Great accessory for any fire pit Liquid appearance as stones burn 10lbs needed for 20 Crystal Fire 12x24 Crystal Fire 20lbs needed for 12x42 Crystal Fire and 24x24 Crystal Fire 1 Year warrantyAssembly Required: No Country of Manufacture: China Depth: 4-2 3 Distressed Finish: No Height: 6-4 5 Weight: 5 Width: 4-2 3