Ring binder Donau Master lever arch A4 75 mm blue

Donau Master lever arch A4 ring binder with a 75 mm spine provides a practical solution for organising A4 documents, reports and invoices. The binder features a lever arch mechanism designed for secure filing and straightforward page turning. Its rigid blue cover and wide spine accommodate thick document sets, making it appropriate for office, school or home filing tasks.

Advantages

The lever arch mechanism ensures reliable sheet retention and allows quick opening and closing for adding or removing pages. The 75 mm spine capacity supports large document volumes while maintaining a compact vertical profile on shelves. The durable cover resists everyday wear and helps protect contents from bending or light damage. The binder’s simple construction makes it compatible with standard punched A4 paper and ring-replacement or repair if needed.

Suitable for

• Storing project documentation, reports and manuals
• Organising invoices, accounting papers and financial records
• School and university notes, coursework and study materials
• Home records, certificates and personal documents
• Archiving paperwork for medium-term storage

Key specifications

• Format compatibility: A4
• Spine width: 75 mm (suitable for medium to large document sets)
• Binding mechanism: lever arch for two-ring filing
• Cover material: rigid protective cover (blue)
• Capacity: holds punched sheets and punched plastic pockets up to the spine width

How to use

Open the lever arch mechanism by lifting the lever and slide punched paper onto the rings, then close the lever to secure pages. For best results, align punched holes with the rings before closing to avoid tearing. Use punched plastic pockets or dividers to separate sections and protect frequently handled pages. When storing on a shelf, place the spine outward for easy identification.

Usage recommendations

To extend lifespan of the binder and its contents, avoid overfilling beyond the recommended spine width, distribute heavy contents evenly, and store upright in a dry environment away from prolonged direct sunlight.