Display Book Opak PP Welded 30pkt A4. In semi rigid polypropylene 0.5mm cover structured matt, stain and scratch-resistant, the display book also called Opak document holder is of superior quality. It is equipped with crystal pockets, high transparency for perfect reading of documents and comfort in the insertion of sheets. Easy to transport, light and resistant, it is very practical to protect documents and keep them in hand, dry in any situation. To choose your document protector, identify the number of pages in your file and choose the capacity accordingly. 1 pocket = 2 views (front and back). 60 Views, 30 Pockets In semi rigid polypropylene 0.5mm cover structured matt, stain and scratch-resistant, the display book also called Opak document holder is of superior quality. It is equipped with crystal pockets, high transparency for perfect reading of documents and comfort in the insertion of sheets. Easy to transport, light and resistant, it is very practical to protect documents and keep them in hand, dry in any situation. To choose your document protector, identify the number of pages in your file and choose the capacity accordingly. 1 pocket = 2 views (front and back).