A3 arch files are robust binders with a strong lever arch mechanism, allowing them to hold a significant volume of A3-sized punched papers securely. They are commonly used in offices, schools, art studios, and by professionals who handle large format documents. Their sturdy construction helps protect important papers from damage, creasing, and wear and tear.

Large Capacity: Designed to hold a substantial number of A3 sheets (e.g., 500-700 sheets of 80gsm paper).

Durable Construction: Made from high-quality board (paperboard) often covered with materials like PVC or a lacquered, water-resistant paper finish for longevity and protection.

Lever Arch Mechanism: A strong metal lever mechanism that allows for easy opening and closing, and a compressor bar to secure papers and prevent tearing of holes. Some premium models feature a "180° mechanism" for wider opening and faster filing.

Spine Label: A large, often removable, label on the spine for easy identification and labeling of contents.

Metal Fingering/Thumb Hole: A metal-reinforced hole on the spine to facilitate easy retrieval from shelves.

Rado Slots/Locking Mechanism: Slots on the covers that engage with the lever arch mechanism, helping to lock the file securely and maintain its shape when full.

Metal Shoes/Corner Protection: Metal edges or corners at the base to prevent scuffing and provide added durability, especially when sliding files in and out of shelves.

Orientation: Available in both portrait and landscape (oblong) orientations, depending on the typical orientation of the A3 documents being stored. Landscape is common for wider charts or drawings.