- matte surface
- made of environmentally friendly polypropylene with a thickness of 40mic
- for A4 size documents
- opening from the top
- transparent, antistatic
- reinforced and colored edge
- number of holes: 11
- external dimensions: 230x304mm

It is important to know

When choosing U-folders for documents, such as this set of Donau envelopes, it is worth considering the way in which they will be used in a business environment and the practical limitations regarding the quantity and security of the contents. For effective organization, it is important that the folder type is compatible with your work processes and the way in which documents are archived or presented. It is also worth paying attention to whether the selected folder type is really suitable for the types of tasks that you want to support with this set.

• U folders are most useful for storing and protecting individual documents or smaller sets; for larger quantities or frequent transfers, there are limitations regarding the security of the content.
• The matte surface reduces glare, which is practical for viewing documents in various lighting conditions, but is not recommended for scenarios where maximum visibility of the content is required without opening.
• The color border (purple) allows for easy visual categorization or separation of projects, but this effect is only greatest if you plan for color coding consistently across your team or archive.
• For formal presentations or handing over to partners, it is better to choose more sturdy and closed folders; this type is more suitable for internal organization and short-term storage.

Source of editorial recommendations: general verifiable guidelines for product selection.

In practice

🟢 Archiving individual documents

Very suitable – U folders are convenient for archiving or temporary storage of individual sheets or thin document sets where additional protection against loss of content is not required.

🟡 Quickly prepare meeting materials

Suitable with limitations – They are convenient for easily sharing documents in meetings, but in the case of a large number of sheets or carrying, there is a risk of the contents slipping out of the folder.

🔴 Carrying larger sets of documents in the field

Less convenient – Opening at the top allows for quick insertion, but does not offer a locking mechanism, so there is an increased chance of losing contents during transfer.

🟡 Internal color coding by projects or departments

Suitable with limitations – The purple border makes categorization easier, but greater transparency is only achieved when using several different colors with a consistent system.

Answers to frequently asked questions

Are Donau U folders suitable for long-term archiving?

They are mainly suitable for short-term storage of individual documents; for long-term archiving of larger sets, it is recommended to choose stronger or closed folders.

How easy is it to visually identify the contents of these folders?

The matte material partially reduces glare and facilitates visibility, but it is not completely transparent, so a quick visual inspection is not always possible without opening.

Is a colored border useful for organization?

A colored (purple) border can help with recognition or separation by department, especially when combined with other colors for system marking.

Is the package suitable for multiple daily uses?

It is suitable for occasional internal use, but constant shifting or daily intensive use may cause wear and tear on the material.

Description updated: October 2026

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