There is no smoke or ash to worry about as you simply pour fuel into the burner and light it for a dramatic fire effect. A 1-insert firebox with a 0.27L Alcohol burner capacity burns 2-2.5 hours. (Combustible time is affected by temperature and other factors, so there will be some differences).There are Waving Base Designs and Round Base Designs of the Tabletop Fire Pits, which can meet your expectations. Specifications : 1. Frame Material: Black powder-coated metal frame, Stainless steel, Tempered glass 2. Burner Capacity: 0.27L 3. Burning Time: 2 Hours(Combustible time is affected by temperature and other factors, there will be some differences) 4.BTU's: 6100 5. Whole Size:6.5'' L * 10.8 '' H / (16.5* 27.4cm) 6.Burner Size : 3.1'' L * 2.7 '' H/ (8* 7cm) 7.Glass Size :6.3''L * 7''W * 0.1'' H / (16 *18 *0.3 cm) (0.27L alcohol burner capacity burns 2-2.5 hours) What You Get : 1 x Tabletop Fire Pit 1 x Thickness Tempered Glass 1 x Flame Snuffer