Standard export seaworthy packing (with waterproof paper, metal belt pack sheet,then put them in wooden pallet, then put in container) or customized. 

20 ft - GP: 5.8m (Length) * 2.13m (Width) * 2.18m (Hight) ------ About 23MTS

40 ft - GP: 11.8m (Length) * 2.13m (Width) * 2.18m (Hight) ------ About 27MTS

40 ft - HG: 11.8m (Length) * 2.13m (Width) * 2.72m (Hight) ------ About 27MTS