The size of a walk-in closet, you can fit the contents of a dorm room. Fits a desk and chair, a dozen or so boxes, and your mattress and box spring.
Store the contents of a small house or two bedroom apartment. Two sofas, two sets of box springs and mattresses, coffee table, desk with chair, refrigerator, TV, and dresser drawers.
Fits the contents of a three bedroom home. Mattresses, box springs, refrigerator, dining room set, couches, bookcases, side tables, coffee tables, boxes, and more.
Enough space to store the contents of several rooms. You could fit a bedroom set, a sofa, several dozen boxes, and a kitchen table.
Equivalent to the size of a one-car garage, can hold the contents of a large apartment or small town home. Fits your refrigerator, washer and dryer, three sets of mattresses and box springs, dining room set, bookcases, couches, armchairs, and your boxes.