Grafix - Medium Weight - Chipboard Sheets 12"X12" - White. 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! Each sheet measures approximately 1mm thick. Acid free. Imported. Each sheet sold separately. Full Packs are 25 sheets.