Where do you store those cans of gray spray paint you use for touching up enclosures? "On a bookshelf in the maintenance department" is the wrong answer. Sticking these containers in a box outside the door doesn't work either. The right answer is "We keep these in a special locker made just for small amounts of flammables. We put the white touch-up paint in there too, along with the solvent we use for cleaning busbars."
Be sure you know what that cabinet is designed to hold, though. If you don't have the original literature that came with the cabinet, go on the manufacturer's website. You should find the limitations in the sales information for each given cabinet product. If you don't see it, use the "Contact Us" or "Support" link to find the necessary information.
You need to know: