Storage Clipboard top opens to a filing space beneath to store loose papers, brochures and documents: Durable hard plastic ensures a sturdy writing area and hard case to hold papers Wire clip keeps documents secure Black A4 Clipboards Internal Measurements: 320mm (L) x 230mm (W) x 27mm (H) Celco Storage Clipboard: Standard Storage Clipboard with Wire Clip. Comes with an internal pressure clip to keep documents secure inside and an embossed 30cm rule.