These economical, student quality mount boards are acid-free with a white core. Designed for mounting artwork and photos but can be used as a backing board for displays or for construction. Easy to cut with a Precision Knife and Steel Ruler. 1mm thick. Photo (Bright) White. PLEASE NOTE: A1 size is an approximate only, size can vary in length and width +/- 5mm.
Zart Art School Catalogue page: 82