# Ring Binder Donau Premium lever A4 50 mm navy blue

**URL:** https://aio.lv/en/product--donau-3955001pl-18--11413223
**Data updated:** 2026-03-07 20:05 (EET)
**Category:** Document Folders
**Manufacturer:** Donau
**Manufacturer code:** 3955001PL-18
**EAN:** 5901498029526
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 7.99 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 6.60 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--donau-3955001pl-18--11413223

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

Donau Premium lever ring binder for A4 documents with a 50 mm spine capacity in navy blue. Features a lever (dźwigniowy) opening mechanism for easy insertion and removal of punched sheets, a durable cover for office and archiving use, and a compact spine suitable for storing up to several hundred pages. Ideal for organizing reports, invoices and project documentation.

## Long description

Donau Premium lever A4 ring binder with a 50 mm spine in navy blue is designed for organized storage of punched A4 documents. The lever mechanism provides controlled opening and closing of the metal rings to insert or remove sheets quickly while keeping documents flat and aligned. The durable cover and reinforced spine make this binder suitable for daily office tasks, archiving and project documentation where easy access and neat presentation are required.
Advantages
The lever opening system enables smooth and reliable operation, reducing wear on punched paper. The 50 mm capacity accommodates several hundred pages depending on paper thickness, allowing consolidation of reports, invoices and manuals in one binder. A navy blue exterior provides a professional appearance while the construction offers rigidity and protection for stored documents during handling and transport.
Suitable for
 Office filing of reports, invoices and contracts
 Project documentation and technical dossiers
 Long-term archiving of punched documents
 Presentation materials and training handouts
Key specifications
 Format: A4
 Spine capacity: 50 mm
 Ring mechanism: lever-operated metal rings
 Colour: navy blue
 Cover: durable, rigid board for document protection
How to use
Open the lever mechanism to separate the metal rings, insert punched sheets onto the rings ensuring correct alignment, then close the lever until the rings click into place. For best results, distribute pages evenly and avoid forcing excessively thick stacks through the rings. Store the binder upright on a shelf or lay flat for transportation to prevent deformation of the spine and to maintain document order.
Usage recommendations
Use hole-punched A4 paper compatible with standard ring spacing. For long-term storage, avoid overfilling beyond the 50 mm capacity and keep the binder in a dry environment away from direct sunlight to preserve cover colour and material.

## FAQ

### How much does the Donau Premium lever ring binder A4 50 mm cost, and is it available for purchase?

The price is 7.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 14.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Donau products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Donau service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11413223/66056254_large.webp