Each pack includes 5 single foam boards 9x12 black foam core board, 3/16 inches thickness These foam boards are made of high quality polystyrene foam and cover with mat white paper, durable and acid-free Ideal for mounting, crafts, paintings, prints, art displays, presentations, and other DIY projects Enhance your artistic expression and showcase your creativity with our foam core poster board Foam Core Boards Each pack includes 5 single boards. 9x12 black foam core boards with smooth surface and high-density composition, this double-sided black foam board offers the perfect boards for your paintings, prints, and art projects.The acid-free feature also prevents discoloration, ensuring your creations stay vibrant and true to their original form. Our foam board is incredibly easy to cut, allowing you to create precise shapes and designs effortlessly. Enhance your artistic expression and showcase your creativity with our Acid-Free Foam Board.