These top quality and presentable boxes are manufactured in 0427 postal box style as pictured. The dimensions are as follows:Internal Dimensions - 160x110x20mm (6.3"x4.3"x0.8") External Dimensions - 166x114x22mm (6.5"x4.5"x0.9"). A Pack Of 25 x single wall postal mailing cardboard boxes, specifically manufactured to meet the Royal Mail 'large letter' restrictions for heavily reduced postage costs, but designed for sending accessories, phones, androids etc securely in the post. These boxes are specially designed with fold over ends and earlock lids, making them easy to construct and self-folding. Manufactured specifically to help send accessories, phones and androids in the post while keeping postage costs as low as possible.