Heavy duty storage buildings include a 6'X6' roll up door and /or walk-in door and/or windows. Licensed contractors we install the concrete pads also. We have financing available. The buldings come in several sizes: 8X8, 8X12, 10X10, 10X12, 12X12, 12X16, 12X20, 14X20. The 10X10'X7' comes with a 6'X6' rollup door priced at $1460 installed. Compare to the big box stores and save!