12x9x4 Inches Shipping Boxes, White Corrugated Cardboard Literature Mailer for Small Business, Set of 20 Packaging Supplies

Streamline your shipping operations with these versatile WINHPH white corrugated cardboard boxes. Measuring 12x9x4 inches, these literature mailers provide the perfect solution for small business shipping needs. The set includes 20 sturdy boxes, ideal for sending documents, products, or promotional materials. Each box features durable corrugated construction that helps protect your contents during transit. The clean white finish maintains a professional appearance while offering ample space for labels or branding. These mailers are sized just right for books, catalogs, or small merchandise, making them a practical choice for retail shipments, office supplies, or e-commerce fulfillment. The consistent dimensions ensure reliable packaging for your shipping routine, while the flat-packed design allows for convenient storage until needed.

• Dimension: The white shipping boxes with an outer size of 12'’x9''x4'', and a usable size of 11.6''x8.9''x3.9''. With 20 packs of our affordable shipping boxes, it is suitable for packaging small business.
• Sturdy & affordable: The mailer box With 3-layer corrugated cardboard materials and double bottom plate design, our 12x9x4shipping boxes are durable and reliable enough to protect their contents during transport.
• Quick Assembly: The shipping boxes folds into shape rapidly without glue or tools, making it easy to store. Quick-fold design allows for efficient setup and storage when not in use, saving time and space.
• VERSATILE USE: Literature mailer boxes are suitable for transporting documents, books, gifts, and various small business shipping needs.
• Safety buckle design：The secure snap-lock design ensures the box packaging remains stable and safe.