Ring binder Donau Master lever arch A4 75 mm red

Donau Master lever arch A4 75 mm red is a lever arch ring binder designed to store and organise punched A4 documents. The binder features a 75 mm spine that accommodates thick document stacks and a lever mechanism with two metal rings for secure binding and easy opening. Its durable red cover withstands frequent handling and is sized for standard A4 filing and shelf storage in offices, schools and home workspaces.

Advantages

The lever mechanism provides smooth, low-effort opening and closing of the rings, allowing quick insertion and removal of papers. The two metal rings ensure reliable alignment and firm holding of punched sheets to prevent slipping. A sturdy cover resists bending and scuffs from daily use, while the 75 mm spine gives high capacity without increasing shelf depth excessively. The binder’s plain red finish makes it easy to identify on shelves and coordinate with colour-coded filing systems.

Suitable for

• Office filing of reports, invoices and contracts
• School and university coursework and project portfolios
• Home document organisation such as warranties, manuals and records
• Project archiving where frequent access and updates are required

Key specifications

• Format: A4
• Spine width: 75 mm (high-capacity)
• Binding type: lever arch mechanism with two metal rings
• Cover: durable, rigid board cover with red finish
• Capacity: suitable for a large stack of punched papers (approximately corresponding to 75 mm spine)
• Intended use: vertical shelf filing and horizontal storage

How to use

Open the lever to release the rings, insert or remove punched sheets as needed, then close the lever to lock the rings in place. Align punched holes with the rings before closing to ensure correct positioning and prevent bending of pages. Store the binder upright on a shelf or lay flat when transporting to keep contents secure. For frequent updates, use plastic sleeves or reinforcements on important pages to extend their lifespan.

Usage recommendations

For organised filing, label the spine or front cover and group documents by type or date. Avoid overfilling beyond the 75 mm capacity to maintain smooth operation of the lever mechanism and prevent stress on covers and rings.