36 Pack A3 Corrugated Cardboard Sheets for Packing, Mailing, Arts & Crafts. 3mm Thickness, (297 x 420 mm) Kraft Board, Large Sheets, Protective Boards (A3)

A3 corrugated cardboard sheets crafted from sturdy 3mm single-wall corrugated material. These 297 x 420 mm kraft board sheets provide maximum rigidity and structural strength for packaging, mailing, crafting, and protective storage applications. A3 rigid Backing board for prints are premium 3mm thick single-wall corrugated construction with 3 layers of durable kraft board. Designed to offer exceptional stability and crush resistance while maintaining a lightweight, easy-to-handle profile for all your project needs. A3 Cardboard Divider is versatile protective inserts perfect for separating prints, artwork, photos, postcards, and magazines during mailing. Also ideal for flower pressing, welcome signs, photo frames, and office organization projects. Generous A3 dimensions measuring 29.7 x 42 cm (11.7 x 16.5 inches) providing ample surface area for school projects, dioramas, display boards, craft boxes, and creative DIY applications. Manufactured in Britain from high-quality, recyclable corrugated cardboard. The traditional kraft brown finish offers a natural, professional appearance suitable for both practical packaging and creative crafting projects. KRAFT BROWN MATERIAL: Traditional brown kraft corrugated cardboard provides a natural appearance and sturdy construction suitable for both professional and creative projects ARTS AND CRAFTS APPLICATIONS: Suitable for painting, cutting into shapes, creating dioramas, display boards, school projects, and various creative endeavors requiring solid backing material