Calculate the total cubic feet of the items you are looking to store.
Unit Sizes (all units are 8.5-feet high)
5′ x 8′ = 340 cubic feet
8′ x 8′ = 544 cubic feet
8′ x 10′ = 680 cubic feet
8′ x 15′ = 1,020 cubic feet
8′ x 20′ = 1,360 cubic feet
8′ x 40′ = 2,720 cubic feet