Semi gloss or gloss will withstand the bumps and scrapes that happen to walls in a storage shed. Gloss will withstand the weather better. Use Outdoor paint,

I have a exterior room off of a porch, no windows, used only for storage, secure door to close. What is the best type of paint to use or does it not matter. It is only used for storage and there is an indoor handler for the AC. Flat, eggshell, semigloss, or does it not matter?