Ring binder Donau Segregator Master A4 50 mm FSC black

The Donau Segregator Master A4 50 mm FSC in black is a durable ring binder designed for organizing punched A4 documents. With a 50 mm spine it holds a substantial volume of papers while the FSC-certified materials reflect responsible sourcing. The binder’s format and robust cover material make it suitable for frequent handling, archiving and everyday office or home use.

Advantages

This A4 ring binder provides stable storage for punched documents, combining a 50 mm capacity with a firm cover that resists bending during regular use. The FSC certification ensures the board materials are sourced from responsibly managed forests. Its standard A4 dimensions and classic black finish offer a neutral, professional appearance that fits filing systems and shelves.

Suitable for

• Office filing and project documentation
• School and university coursework or lecture notes
• Home record keeping and manuals
• Archiving reports, invoices and administrative paperwork

Key specifications

• Format: A4 (suitable for punched A4 documents)
• Spine width: 50 mm capacity for documents
• Cover: durable board material with black finish
• Binding mechanism: ring binder system for punched sheets
• Material certification: FSC-certified board

How to use

Open the ring mechanism and insert punched A4 sheets aligned with the rings. Close the rings until they click or align securely to prevent pages from slipping. Store the binder upright on shelves or flat in drawers; avoid overfilling beyond the 50 mm capacity to maintain the mechanism’s function and the cover shape. For archiving, label the spine or add a spine insert if available to identify contents quickly.

Usage recommendations

Handle the binder by the spine or edges to reduce wear on the cover. Keep the binder away from excessive moisture and direct heat to preserve the board material. Use hole-reinforcement labels for frequently turned pages to extend longevity of documents.