About This Packing Boxes:Brown shipping box set are easy to assemble, these boxes good for mailing any retail shipping, or Daily storage supplies,also use as a business corrugated packaging boxes Shipping Boxes Size: 40 Pack shipping box external size dimension is about 12x9x4 inch (30.5x22.86x10.1cm) and its inner size is about 11.9x8.9x3.9 inch Boxes Mailers Material: These 12x9x4 shipping boxes Made of brown kraft corrugated cardboard, Three layers of E watts, the 12x9x4 box material are recyclable, eco-friendly and sturdy Corrugated Packaging Boxes: 12x9x4 cardboard boxes has a certain cushioning and anti-pressure protection effect to protect what you're carrying TIPS: Please confirm the size again, during the transportation process, it may cause a little deformation to the corner and will not affect the use Overview Brand : Schliersee Color : Brown Shipping Box Material : Cardboard Product Dimensions : 12"L x 9"W x 4"H Item Weight : 4.64 Kilograms Number of Boxes : 40 Weight Limit : 0.12 Kilograms