(Formerly known as Class B, Special Fireworks. ) Large fireworks articles designed to produce visible or audible effects for entertainment purposes by combustion, deflagration, or detonation. This term includes, but is not limited to, salutes containing more than 2 gr (130 mg) of explosive composition (salute powder), aerial shells containing more than 60 g (2. 1 oz) of total pyrotechnic and explosive composition, and other display pieces that exceed the limits for classification as consumer fireworks, 1. 4G.