Franklin Park Storage Units - Each has concrete floor and electric. Great for storing boats, cars, seasonal toys and more. 3 sizes to choose from: Units 1-10 are 12'x24' (288 sq. ft.) with 10' overhead door: $15,000 each(dues are $209/year). Units 11-20 are 16'x30' (480 sq. ft.) with 12' overhead door: $25,000 each (dues: $241/year). Units 21-28 are 20'x40'(800 sq. ft.) with 12' overhead door: $35,000 each (dues: $298/year).