Ring Binder Donau 4-ring A4 40 mm white — Donau 2788404PL-09

The Donau 4-ring A4 binder with a 40 mm spine in white provides a simple, practical solution for storing and organising punched A4 documents. Designed for standard ring-punched paper, the binder accommodates a moderate volume of sheets while keeping pages secure and aligned. Its white cover offers a neutral appearance suitable for office, school or home environments and supports filing, archiving, presentation and document transport needs.

Advantages

The four-ring mechanism ensures stable page alignment and reduces the risk of pages shifting during handling. A 40 mm spine offers enough capacity for several dozen to over a hundred standard sheets depending on paper weight, enabling consolidated storage without bulky folders. The white exterior creates a uniform look on shelves and in binders systems, and the rigid cover protects contents from bending and light damage. Materials are selected for everyday use and easy handling.

Suitable for

• Office filing and organised storage of reports and records
• School and university course materials and handouts
• Presentations and client proposals that require a clean, neutral cover
• Archiving documents and consolidating paperwork for transport

Key specifications

• Format: A4 (suitable for punched A4 sheets)
• Ring type: four-ring mechanism for standard punched paper
• Spine width: 40 mm capacity for medium-volume storage
• Cover colour: white with a rigid construction to protect contents
• Intended use: filing, archiving, presentation and document transportation

How to use

Open the binder mechanism using the manual release on the rings, place punched A4 sheets onto the rings ensuring holes align correctly, then close the rings until they snap gently into place. Load sheets evenly to maintain balance and avoid overfilling beyond the 40 mm capacity. Label the spine or insert a cover sheet if identification is required, then store upright or flat depending on available shelving and transport needs.

Usage recommendations

For longevity, avoid overfilling and handle the ring mechanism gently. Use appropriate punched paper or hole reinforcements for frequently handled documents. Store the binder in a dry environment and keep heavy objects off the cover to prevent deformation.