To give you an idea of what size you need, refer to the following chart

Approximate Size                      Capacity                     Price/Climate

5 x 5                        Clothes, mower, small items          $30 / $55   mo.  

5 x 10                       1 to 2 room apartment                $45 / $70   mo.

5 x 15                       1 to 3 room apartment                $55 / $85   mo.

10 x 10                      3  rooms of furniture                  $65 / $95   mo.

10 x 15                      4  rooms of furniture                  $80 / $115  mo.

10 x 20                      5 to 6 rooms of furniture             $95 / $155  mo.

10 x 25                      5 to 7 rooms of furniture             $115 /  N/A mo.

10 x 30                      3 to 4 bedroom house                 $135 /  N/A mo.

• Units are approximately eight feet high all have cement floors 
• Units are built of steel, some have overhead lighting
• Units are available 24 hours a day, access via a 4 digit passcode