# Ring Binder Donau Premium lever-arch A4 50 mm black

**URL:** https://aio.lv/en/product--donau-3955001pl-01--12167475
**Data updated:** 2026-03-26 06:22 (EET)
**Category:** Document Folders
**Manufacturer:** Donau
**Manufacturer code:** 3955001PL-01
**EAN:** 5901498029250
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 7.99 €
**Prices and availability valid until:** 2026-07-20 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-01--12167475

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

Donau Premium lever-arch ring binder for A4 documents with a 50 mm spine capacity in black. Designed to store and organize punched papers, reports and documents; features a lever-arch mechanism for secure fastening and easy opening. Suitable for office, school and home use where medium-capacity document storage and quick access are needed.

## Long description

Donau Premium lever-arch A4 ring binder with a 50 mm spine in black is designed to store and organise punched A4 documents, reports and loose sheets. The binder uses a lever-arch mechanism that secures paper stacks and allows quick opening for adding or removing pages. Its 50 mm capacity is suitable for medium-volume document sets while the black finish provides a neutral, professional appearance for office, school or home environments.
Advantages
The lever-arch mechanism provides firm retention of punched papers and enables one-handed release when needed. A rigid spine and durable cover material keep documents flat and protected from creasing or dust. The binder’s interior is designed for compatibility with standard A4 punched sheets and ring-arch filing systems, allowing straightforward insertion and removal of documents. The black exterior offers a low-maintenance surface that hides wear and is appropriate for professional filing.
Suitable for
Storage of A4 reports, manuals and project files
Organising study materials for school or university
Filing invoices, receipts and administrative paperwork
Archiving medium-capacity document sets
Key specifications
Format compatibility: A4 punched sheets
Spine width / capacity: 50 mm (medium capacity)
Closure type: lever-arch metal mechanism for secure fastening
Exterior colour: black
Cover: rigid, durable material for protection and shape retention
How to use
Open the lever-arch mechanism by lifting the lever and spread the metal rings apart to insert punched sheets. Align the punched holes of documents with the rings and press the rings together, then close the lever to lock the papers in place. To remove or rearrange pages, open the lever and release the rings. Store the binder upright on a shelf or flat in a drawer to maintain spine shape and protect contents from bending.
Usage recommendations
Use paper with standard A4 2- or 4-hole punching compatible with the lever-arch rings. Avoid overfilling beyond the 50 mm spine capacity to prevent strain on the mechanism; distribute heavy documents across multiple binders if necessary. Keep the binder away from prolonged direct sunlight and moisture to preserve cover integrity.

## FAQ

### How much does the Donau Premium lever-arch A4 50 mm binder 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 — 15176 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 13.07.2026 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/12167475/67712424_large.webp