Greyboard Backing Card: The Perfect Choice for Your Creative Projects. Do you need a sturdy and versatile card for your arts and crafts, design, or modelling needs? Look no further than Greyboard Backing Card from PaperCutz. This card is made from 100% recycled material and has a thickness measured in microns, for example 3000 micron is (3mm). It is ideal for making mock-ups, presentations, book covers, picture mounts, and more. You can easily cut, glue, or fold this card to suit your purposes. You can also use it for foiling, embossing, or die-cutting to create stunning effects. Place your order with PaperCutz today and enjoy quick delivery on every purchase.