[maple_leaf_eh]

Look at the floor before you buy. There are some with solid steel floors, others have 2x6 hardwood boards. The wood ones are not really weatherproof because of humidity. The other thing to look at is the roof. The shipping companies condemn them when the salt air and chafing in the ship, rub pin holes in the steel skin. If the container spent too many cross ocean trips on the bottom of a stack of 10 loaded containers, the frame and corners are probably stress cracked.

(and if some MLU'er can make a good joke combining salt, chafing and steel skin, I'll tip my internet hat)