- 20 pcs Black 11.8x8x2 inch Perfect Size for Small Business. The shipping box weight is 2.4 oz/pcs, reducing unnecessary weight costs. They are lightweight and save postage, perfect for the mailing or storage for the small business supplies or other items shipping. The mailer boxes are double-sided white, they are great for DIY your own label. Multiple Use: The mailing boxes are great for packaging small business supplies. It’s appropriate for shipping your handmade items across the country and great to ship a wide variety of items such as gifts, candles, socks, cookies and biscuits. Easy to Assembly: Our small cardboard boxes are designed to assemble in seconds without tape, glue, or staples, making the packaging process quick and hassle-free. These small shipping boxes are perfect for small business packaging supplies, saving the packing time for your company.