A 5x10 storage unit is the size of a small walk-in closet.
It fits furnishings of a mid-sized bedroom, including a queen-sized bed, a dresser, a TV and several small to medium-sized boxes.

A 5x15 unit is the size of a large walk-in closet. This unit is ideal for furnishings from a one-bedroom apartment, a washer and dryer, plus small boxes.

A 10x10 storage unit is the size of half of a standard one-car garage.
It fits the contents of an entire family room or two full bedrooms, including several small to medium-sized boxes.

A 10x15 storage unit is a little smaller than a standard one-car garage.
It fits the contents of three full bedrooms and larger items such as a piano, couches, tables, or large-screen TVs, plus several medium to large-sized boxes.

A 10x20 storage unit is the size of a standard one-car garage.
It fits 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 large boxes.

A 10x30 storage unit is the size of an extra long one-car garage with double doors. (2 Locks required)
It fits the contents of a four-to five-bedroom house with major appliances and room for boxes. Excellent for business storage of files, equipment, and permanent records.