The packing material is wooden case,normally one unit elevator with 5 floors needs 7 wooden cases. 7 ton needs a 20'GP, actually it's according to quantity, weight and wooden cases total size to choose the 20'GP,40'GP or 45'HQ.The packing material is wooden case,normally one unit elevator with 5 floors needs 7 wooden cases. 7 ton needs a 20'GP, actually it's according to quantity, weight and wooden cases total size to choose the 20'GP,40'GP or 45'HQ.