... , equipment case good quailty with reasonable price 1.Aluminum case, rack case ,speaker case , audio case , light case, tool case ... so on2.9mm and 10mm plywood ,The side from 2u to 24u , it is very solid and can protect ... for ,we can classified several kinds of cases -- Aluminum case, rack case ,speaker case , audio case , light case, tool case ... with good service , and have built goodwil rack case