A 10x10 unit fits the contents of an entire family room or two full bedrooms, including several small to medium-sized boxes.

A 10x12 unit can fit the contents of an entire family room or two full bedrooms, including several small to medium-sized boxes.

A 10x18 unit can fit the contents of a multi-bedroom house, including several oversized items like a couch, a refrigerator, a washer/dryer and a dining room set or several small to medium sized boxes.

This unit has 2 doors (one at each end)
A 10x30 unit can fit the contents of a fully furnished 3-5 bedroom house, including oversized items such as a couches, beds, dressers, a refrigerator, a washer/dryer, a dining room set, an entertainment center and several large boxes.