A4 Blue Clipboard Box File – Storage Filing Case. A4 Clipboard Which Doubles As A Storage Box. Approx Size: 35cm x 24cm x 2.5cm. Waterproof, Compact & Durable. Hardwearing translucent polypropylene plastic weatherproof multipurpose storage box. Pen/Pencil holder for convenience. Holds A4 sized documents approx 150 sheet capacity. Heavy duty low profile spring loaded metal clip at top of the clipboard with plastic coated corners to prevent damage to documents. The box file is hinged at the top and folds out flat. Secure snap lock closure at the bottom.