You need a comic book frame because a comic book box for magazine storage can make your comic book dividers more protected. Mylar comic bags are brittle. It can be a quarter board. Everyone loves comic book cardboard. But also check out our comic book boards and bags resealable. The world needs more bookboards and backboards and mini cardboards for heavy duty comics. Comic Sleeve Board. You could try and use these card inserts for bronze age or golden age comics but that's up to you.