Crescent Creative Products SP8-0507 40 Count No.8 Ultra-Black Double-Sided Bulk Pack Mounting Board, 5" by 7" 5" X 7" school packs (40 count) make it easy to stock up and save Blackest and most fade-resistant board available, solid Black color throughout Double sided board features one smooth side for mounting, one textured side for pastels, chalk and Acrylic paint Sturdy, Medium weight boards (0.050- 0.060thick) are heat-resistant, buffered, acid-free Made in the U.S.A