Clamshell box


The clamshell box is a classic, rigid construction which can be used to store various types of objects - from small-sized books to fragile parchment, large-scale maps and plans. The only limiting dimension is the height of the box (spine width in case of books) - it cannot be lower than 25-30 mm due to cardboard rigidity, which makes it impossible to fold it at a lower level. For books with spines thinner than 25 mm, we would recommend the III construction - a folder box with a double wall - or the IVc archival box. 

With this construction, the storage can only be horizontal. If boxes are the same size, they can be stacked. The IIc type boxes can be stacked even if they differ in sizes as long as they tightly hold the objects stored in them. 

 Our clamshell boxes have cutouts for fingers so that they can be opened easily. 

  • length (a) 
  • width (b) 
  • spine width (c)

With this construction, we must be provided specifically with the dimensions of an object to be stored (not the storage product), without adding a margin of space. If the object to be stored is e.g. large-format graphic art, its length and width must be provided to us - we will produce a box of minimum possible height (about 25-30 mm).


Add custom formats
Index a (mm) b (mm) c (mm) Amount Sample Comments
Omni-Box special formats

The Omni-Box system is a service whereby we produce single units and short series of archival storage products of non-standard constructions or in non-standard formats. 
See all products.

Who is Omni-Box for?

The Omni-Box storage products are mainly designed for those of our Clients who need:

  • one, a few or a few dozen units of storage products in a special, non-standard format;
  • to store a collection of books in such a manner that each volume is kept in a separate box;
  • storage products of non-standard construction.
How does it work?

First, our experienced designers make a computer design of a box or folder. After that, the product undergoes cutting and creasing by means of a digital plotter.

How should I measure an object to be stored?

Do you feel discouraged when you think of how much work it takes to take measurements of all the books to be stored in individual boxes? There is no need! For that purpose we can lend you, free of charge, the Bookmeter. With this device, which resembles an aluminium drawer, you can measure a book’s spine width, its width and height in just a few steps. It provides a precise measurement, and the data is wirelessly sent to a table on your computer. This helps you prevent making a mistake, which can happen when taking measurements manually. All you need to do is provide a reference number of each volume and… it’s done! 

This file is then used to produce a custom-made storage product for each volume.

BOOKMETER User Manual Omni-Box


Can I choose the material myself?

When preparing a quote for Omni-Box products, we usually decide which material to use based on the construction of the product, its size and the type of object to be stored in it. However, if you would like the product to be made from a different type of cardboard or paper than the one we suggest, write to us and let us know about it. If producing a given product from your preferred material is technically possible, we will take it into account when preparing the quote.  

Where do I find Omni-Box prices?

The prices of Omni-Box storage products are calculated on an individual basis. Select a construction and provide us with dimensions, and we will prepare a quote for you.