frame mat: 1. Matboard core: white,cream,black 2. Thickness:0.8mm-3mm 3. A vareity of ... board, pre-cut mat board)2. white core, black core,cream core mat board3. thickness: 0.8 --3.0mm4. size: 30 ... , children's projects, and school projects9. components: Decorative facing paper, Light cream pulp core and backing paper, Surface core and backing paper ...