Ring Binder Biurfol SE-47-01 A4, 4-ring, 45 mm spine, black

Biurfol SE-47-01 is a black A4 ring binder with a 45 mm rigid spine and four rings designed to hold standard A4 punched documents. The binder provides structured storage for reports, manuals, archived files and everyday paperwork in office, school and home environments. Its firm spine increases capacity while the four-ring mechanism keeps sheets aligned and reduces shifting during handling.

Advantages

The binder combines a deep 45 mm spine with a four-ring system to offer reliable document retention and increased storage volume compared with slimmer folders. A rigid construction supports upright storage on shelves while a plain black exterior ensures a professional and neutral appearance. The four-ring mechanism distributes holding force along the document edge, improving alignment and reducing wear on individual pages.

Suitable for

• Organising A4 reports and presentations
• Storing manuals, handbooks and technical documentation
• Archiving project files and customer records
• School coursework and classroom materials
• Everyday office paperwork and forms

Key specifications

• Format: A4 (suitable for standard A4 punched sheets)
• Ring type: four-ring mechanism for secure fastening
• Spine width: 45 mm providing high sheet capacity
• Exterior colour: black for a professional look
• Construction: rigid spine for stable shelf storage

How to use

Place A4 punched documents onto the four-ring posts and close the ring mechanism until it locks. Align pages before closing to ensure even hole engagement and smooth page turning. Store the binder upright on a shelf or flat if preferred; avoid overfilling beyond the 45 mm capacity to prevent strain on the rings and spine. For frequent access, label the spine or attach a removable tab for quick identification.

Usage recommendations

Use A4 sheets with standard hole punching to ensure compatibility with the four-ring mechanism. To maintain the mechanism’s function, open and close the rings gently and avoid forcing heavily overfilled binders. When archiving long-term, keep the binder in a dry, room-temperature environment to protect documents and preserve the binder’s shape.