Storage units come in a variety of shapes and sizes, so you can store everything from standard office files to large boats and trucks. When picking a storage unit, you have to look at the number of square feet. There are small, medium and large storage units. Smaller units go from 25 to 50 square feet of space. You can stack boxes, small pieces of furniture and other small items in these spaces. Medium storage units range up to 100 square feet. The largest storage units are up to 200 square feet  capable of  water sports equipment, four-wheelers, farm equipment and other bulky items. You can use our storage size guide to find out how much storage space you need!