Their size, based on a distinctive unit, categorizes the shells of aerial fireworks. The number indicates the inner diameter of the fireworks launcher.
#5 shell = shell’s outer diameter is approximately 14.4cm
Fireworks with bigger shells rise higher and form a larger sphere in the air.
The height at which #5 shell scatters: approximately 200m
The diameter of which sphere the shell of the fireworks forms: approximately 150m (approx. 75m radius)
