Usually we call the U case is that the length and the width is invariable. The height is increase as a invariable digit 44.5mm.The U case can be classified two types one is monolayer the other is double deck. The size of the first one is 50*53cm and the later one is 50*60cm. We can add the mixer or other case. The U case have 2 U case, 4 U case. 8U case. 10U Case. 12U case. 14U case. 16U case. 18U case. 20 U case.
The flight case not only use the fireproof plywood. And other accessory but also use hte shockproof foam which make the machine in the case more save. Especially to the compact machine. We usually make some suitable foam coatto protect it.