PRESERVE ARTWORK - Crafted from 100% cotton fiber pulp (99% Alpha Cellulose) ensuring your photos and documents remain safe from acid damage, maintaining their value and appearance. PROFESSIONAL QUALITY - Achieve gallery-worthy presentations with our 4-ply (30 pt.) museum board, approximately 1/32' thick, providing a substantial and elegant backing for your prized images. GENEROUS QUANTITY - Each package contains 15 boards, offering ample supply for multiple projects, whether you're framing photos, mounting artwork, or creating professional displays. OVERSIZED FORMAT - Measuring 32 x 40 inches (81.28 x 101.60cm), these boards accommodate large prints and layouts, giving you the flexibility to showcase your work without compromise.