... 9mm fireproof foams and aluminum alloy and parts of case.subject to customer's requirement to design the size ... suitable for transport heavy cargo.We make speaker case,flight case,brace case and so on.we can make 2U,3U ... 4U,6U,8U,10U,12U,16U,18U,22U,24U1. Flight case for LED light, scanner,laser, machine,etc2. Durable ... .6. Customized design and requirements are welcomed. high quality tools case