海关查验的时候会产生的，全掏箱的话就是所有的货物全都掏出来，半掏箱的话，一般在集装箱中间掏一个通道，容一个人进去，查看一下货物的情况就可以
属于自由集装箱吧~~可能是客户自己的集装箱，或者是客户指定的集装箱~~具体可以问问这个ISO确切指的是什么~~
区别于普通箱开顶箱，主要用于装载超高货物。
Allowing cargo to be loaded from the top, open top containers are particularly suitable for bulky cargo such as machinery. They are fitted with a PVC tarpaulin cover and attachable bows with cable sealing devices. The container doors can be removed to make the stuffing of cargo more convenient. Manufactured from steel, open top containers come in 20 ft and 40 ft sizes.