Grafix-Medium Weight Chipboard Sheets: Black. Grafix chipboard sheets come to you completely bare so you can dress them up however you would like! Paint, ink, stamp sand distress the cover with paper fibers and fabric, stitch, die-cut, layer and even create a handmade album. The possibilities are endless! This package contains twenty-five 6x6 inch chipboard sheets (white on one side and brown on the other). Each sheet measures approximately 1mm thick. Acid free. Imported.