Hixdo 4 Pack Foam Board 24"x36", 0.23 Inch Thickness White Poster Board, Double-Sided Acid-Free Foam Core Board, Large Lightweight Polystyrene Mat Board for Painting, Display, Craft & School Projects

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📦6MM Thick Sturdy Core & Edge Protection (with Plastic Corners): 6mm high-density foam core board offers strong support for paintings/presentations/crafts (no bending/warping). Each package includes plastic corner guards + shock-absorbing design, preventing shipping edge damage and solving "broken-board on arrival". 🎨Double-Sided Smooth & Seep-Proof Surface: White foam board features a burr-free, double-sided smooth surface that prevents paint, marker, or glue from soaking through. It works perfectly with watercolors, acrylics, and adhesives, eliminating the hassle of uneven coloring or paper peeling caused by seepage. 📜Acid-Free Material for Long-Term Preservation: Double-sided acid-free foam board (acid-free polystyrene foam + outer paper) neutralizes airborne acids, keeping artwork/photos from yellowing/fading. Ideal for archival storage/long-term displays. ✂ Lightweight Yet Rigid & Easy Precision Cutting: Lightweight foam core board is easy to carry (school/on-site use), while rigid construction stays flat. Smoothly cut with a utility knife (no jagged edges) for custom sizes/shapes—solves heavy board transport/custom issues. 🎯 Versatile for Multi-Scene Use (4-Pack Value): The 24"x36" standard size suits diverse needs: school projects, office presentations, home crafts, cosplay props, and exhibition displays. The 4-pack white poster board provides enough quantity for extended projects, avoiding frequent reorders and saving time.