5 x 10 size self storage unit is the size of a small walk-in closet.  It typically fits furnishings of a mid-sized bedroom, including a queen-sized bed, a dresser, a TV and several small to medium-sized boxes.

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

10 x 15 size self storage unit is a little smaller than a standard one-car garage. It typically 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.

10 x 20 size self storage unit is the size of a standard one-car garage.  It typically 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.

10 x 30 size self storage unit is as large as a one and a half car garage.  It typically fits the contents of a fully furnished 3-5 bedroom house, including oversized items such as couches, beds, dressers, a refrigerator, a washer/dryer, a dining room set, an entertainment center and several large boxes.