A 10x20 storage unit is 10 feet wide by 20 feet deep, for 200 square feet of floor space. With 8-foot ceilings, that works out to 1,600 cubic feet of total volume. It is comparable to a single-car garage.

About 390 medium moving boxes stacked wall to wall, five layers high, with nothing else in the unit. Leave a reach zone at the door and the realistic figure drops to 300 to 320.

Yes. A 10x20 takes compact cars, sedans and most mid-size SUVs, with room left over. Compact cars run about 155 to 170 inches long and 66 to 72 inches wide, which leaves 70 inches of depth behind the car and 48 inches on each side.

Standard cab pickups (about 200 inches long) are tight in a 10x20 (240 inches deep) but fit with careful positioning. Extended and crew cabs run 220 to 240 inches long and may not fit.

Usually yes for a four-bedroom house without a large garage. If you are storing appliances, a workshop or a full two-car garage, you may need a 10x30.

Our 10x20 units have 8-foot ceilings, giving you 1,600 cubic feet of volume.

Choose a temperature-regulated unit for electronics, wood furniture, photographs, artwork, documents, leather and musical instruments. For storing a car, a standard unit is typically fine.