Ring Binder Donau A4 4-ring 20 mm spine navy blue

Donau A4 4-ring binder with a 20 mm spine in navy blue is designed to store punched A4 documents in an organized and compact way. The binder features a 4-ring metal mechanism with standard ring spacing to accept punched papers and common refills. Its durable cover provides everyday protection for sheets used in office, school, or home environments while the slim spine keeps the binder easy to handle and store on shelves.

Advantages

This Donau ring binder combines a robust 4-ring mechanism with a 20 mm spine that holds a moderate quantity of A4 pages while maintaining a slim profile. The navy blue cover is resistant to scuffs and offers a neutral appearance suitable for professional and personal settings. Standard ring spacing ensures compatibility with most punched documents and refill sheets, and the secure closure keeps pages aligned and protected during transport and storage.

Suitable for

• Organizing A4 punched documents for office filing
• School notes, assignments and handouts
• Home paperwork such as manuals, receipts and warranties
• Project documentation and small presentations

Key specifications

• Format: A4
• Ring type: 4-ring metal mechanism
• Spine width: 20 mm
• Color: navy blue
• Compatible with standard punched A4 paper and refill sheets
• Cover: durable, stiff material for everyday use

How to use

Open the 4-ring mechanism and align punched A4 pages with the rings before closing them securely. For best results, insert pages that match standard A4 hole spacing and avoid overfilling beyond the 20 mm spine capacity. Store the binder upright on a shelf or lay flat for transport; when carrying, ensure the binder is closed to prevent pages from slipping out.

Usage recommendations

To extend the life of the binder and maintain neat organization, distribute contents evenly, avoid forcing additional sheets past the spine capacity, and use protective sleeves for frequently handled documents. Regularly check the ring mechanism for proper alignment to prevent paper snags.