Shisha heating system set with terracotta hearth. . heating system: . lid: height x diameter (cm). 2.2 x 7.3cm. grid: thickness x diameter (cm). 0.02x9cm. chimney: height x diameter (cm). 6 x 0.9cm. . terracotta hearth: . hearth base diameter: 5 cm. tank diameter: 7 cm. height: 8cm