Clamshell boxes are a way of protecting books or documents. The tray that the item sits in is made to the exact dimensions of the book, which protects the book from any wear and tear from handling. The tight tolerances in the box creates a consistent micro-climate inside, protecting from changes in humidity and temperature as well as from damage from UV light and dust.
The boxes I make are entirely out of archival quality materials, which are great for long protection for your precious items. The box is crafted from a strong, high density, binder’s board. The paper is acid free. Great care is taken in the design of the box to uniquely compliment the books inside.
You can view more examples of boxes here as well as starting prices.