6x4x4 White Shipping Boxes Set of 40, Corrugated Cardboard Mailer Boxes for Packaging Small Business Mailing Gifts

Dimensions: These self-locking shipping boxes' outer size is 12x10x6 inches and inner size is 11.6x9.9x6.9 inches. Sturdy Material: Three-layer and double-bottom plate mailer boxes, great cushioning properties, and structural strength. The perfect choice of shipping boxes for small businesses or retail sellers. Quick Assemble: The white cardboard boxes can be assembled quickly in seconds without glue, tape, or staples, and the special design of the semi-circular cutout makes it easy to open. Matte White Boxes: Small shipping boxes in white appearance for easy writing and labeling. Ideal for DIY a unique box of yourself, making it special in your carrier, or packing it as a gift box. Widespread Application： The E flute cardboard cartons are lightweight, and intensive flutes make them also durable. Widely used in mailing, packaging, and storing small items.