Ring Binder Donau lever A4 50 mm light green — Donau 3950001PL-41

Lever-arch ring binder Donau A4 with a 50 mm spine in light green is designed to store punched papers, reports and catalogs in an organised way. The binder combines a robust cover with a metal lever mechanism that opens and closes the rings quickly for secure filing. A visible spine strip allows clear labelling to identify contents on shelves or in archive boxes.

Advantages

This Donau lever-arch binder provides a large 50 mm capacity suitable for thick documents while maintaining a slim external profile. The metal lever mechanism ensures fast access and reliable closure of the rings, reducing paper movement and wear. Durable covers protect contents from dust and bending, and the light green colour aids visual organisation. The spine labelling area supports easy identification and archive management.

Suitable for

• Office filing of reports, invoices and project documentation
• Archiving and long-term storage of punched papers
• School and university course materials and student portfolios
• Presentation folders and catalog storage

Key specifications

• Format: A4
• Spine capacity: 50 mm
• Ring type: lever-arch metal rings
• Cover: sturdy protective covers
• Colour: light green

How to use

Open the metal lever to separate the rings, insert punched documents evenly onto the rings and close the lever until the rings lock. Use the spine strip to insert a label with title or date for quick identification. Store the binder upright on a shelf or flat in archive boxes depending on space; avoid overfilling beyond the 50 mm capacity to keep the mechanism working smoothly.

Usage recommendations

For prolonged preservation of documents, place fragile papers between protective sheets before inserting into the binder and keep the binder in a dry environment away from direct sunlight. Regularly check the ring alignment and avoid forcing the mechanism if resistance occurs.