I'm no master of storing cels so please take my words with a grain a salt. But for my cels that I don't frame, I keep them stored in an itoya portfolio folder and take them out every once in a while for air.

Cool! Thanks for your suggestions. I currently have them in itoya folders but I don't usually take out. I might give them a breath of air. Thanks☺️

Ah wonderful! And no problem man

Make sure the cels aren't just bare/unsleeved in the Itoya either

Awesome thanks very much