Ring Binder Donau Master lever A4 50 mm turquoise PBSX0078

The Donau Master lever arch ring binder A4 with a 50 mm spine in turquoise is a filing accessory designed for standard A4 documents. It features a lever-operated locking mechanism that allows secure closure and fast opening for inserting or removing documents. The binder accommodates punched A4 sheets and is suitable for daily use in offices, schools and home workspaces where organized document storage is required.

Advantages

This lever arch binder provides a clear filing solution with a 50 mm capacity that holds a substantial volume of punched A4 sheets while maintaining a slim profile. The lever mechanism simplifies opening and closing, reducing strain when handling many pages. The sturdy cover and reinforced spine ensure stable storage on shelves and in cabinets, and the turquoise finish makes it easy to identify among other binders.

Suitable for

• Organizing reports, meeting notes and project documentation
• Storing school materials, assignments and handouts
• Archiving invoices, contracts and administrative paperwork
• Home office filing and personal record keeping

Key specifications

• Format compatibility: A4 punched sheets
• Spine capacity: 50 mm
• Closure type: lever-operated ring mechanism for quick open/close
• Cover color: turquoise
• Construction: rigid cover with reinforced spine for shelf stability

How to use

Open the lever-operated mechanism to release the rings and insert punched A4 sheets evenly along the rings. Close the lever to lock the rings securely and ensure sheets are aligned to avoid bending. Use the spine to label the binder for quick identification; store the binder upright on a shelf or flat in a cabinet depending on space and access needs. When adding or removing large groups of pages, open the lever fully to minimize stress on the mechanism and pages.

Usage recommendations

For best results, use standard punched A4 paper and avoid overfilling beyond the 50 mm capacity. Label the spine clearly and store the binder in a dry environment to maintain cover condition. Periodically check the lever mechanism for smooth operation and realign pages before closing to extend the product’s service life.