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Umriox Zipper Mesh Document Pouch, 16.9x12.4 in (Black, 18 Packs), A3, Black

You will notice the black surface repels dust somewhat, keeping it cleaner longer.

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24pcs Mesh Zipper Pouch File Bags Puzzle Storage Bags, A3 17x12 A3, 8 Colors

A nice touch is the small Case logo on the corner of the panel.

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