This type of machine has about 25,000 lbs. load capacity. The heavy duty lift trucks that handle full cargo containers have a load capacity of 70,000-105,000 lbs. Generally speaking the loaded container handlers stack to about 4 container height. The largest empty container handlers are able to stack up to 9 high.You may be interested to know that the loaded container handlers lock onto the box from the top. Meaning the hydraulic spreader connects with all 4 of the top corner castings and then lifts. As you see in this video the empty container handler locks into the side of the box. The 2 different types of lift trucks are often called top loaders or side loaders.