This Sunware Q-Line Storage Box 10L is a great choice for storing A4 size papers/documents, keeping them moisture and dust-free. It is made of durable material with sturdy closing clips and a convenient carrying handle, making it easy to transport. Plus, the box is perfectly stackable, making it a great space-saving solution. With its 40 cm by 30 cm by 11 cm dimensions, it is perfect for both home and office use.