Ring Binder Esselte 320850 A4 Black

The Esselte 320850 ring binder is a durable A4 file organiser constructed from polypropylene and reinforced cardboard. With external dimensions of 287 mm width, 52 mm spine depth and 318 mm height, this black binder is designed to store and protect A4 documents while maintaining a slim, professional appearance. The product is FSC certified, indicating that the paperboard components come from responsibly managed forests.

Advantages

This ring binder combines rigid cardboard panels with a polypropylene cover for increased resistance to bending and surface wear. The 52 mm spine allows for a substantial stack of documents while keeping the binder compact. The black finish provides a uniform, low‑glare surface suitable for office shelving and meeting rooms. Materials chosen for construction are intended to balance light weight with durability, and the FSC certification supports sustainable material sourcing.

Suitable for

• Storing and organising A4 printed documents and reports
• Archiving meeting notes, invoices and project files
• Office or home filing where a professional appearance is required
• Short-term transport of documents between locations

Key specifications

• Format: A4 document capacity
• External dimensions: 287 mm (W) × 52 mm (D) × 318 mm (H)
• Cover material: polypropylene with reinforced cardboard
• Spine type: ring binder mechanism suitable for punched paper
• Colour: black
• Environmental attribute: FSC certified board

How to use

Open the binder's ring mechanism and align punched A4 sheets with the rings, then close the rings until they fully engage to secure documents. Position any loose sheets or dividers evenly to avoid overfilling; the 52 mm spine accommodates a moderate volume of paper. Use the front and spine surfaces for labels or notes to identify contents when stored on shelves. For transport, close the binder and place it upright or flat in a bag to reduce strain on the ring mechanism.

Usage recommendations

To maintain functionality, avoid forcing the ring mechanism closed on overfilled contents and keep the polypropylene cover away from high heat sources. If long‑term archival storage is required, use acid‑free sleeves or interleaving sheets and store the binder in a dry, stable environment to preserve paper quality.