Replacing Bi-Folding Doors??

I was going to use mylar with zipper doors, but the fan created too much negative pressure, zippers leaked light, etc etc. Any ideas for replacing these bi-folding doors with something that would be nice for a closet that must be totally sealed (light and air)??


Looking forward to all suggestions Grow got put on hold sadly so I've got time to make this nice. Ordering a tent for veg soon and plan to keep this closet 12/12 for a perpetual SOG style grow.