The Boxery 18x12x10 Inches Recycled Corrugated Cardboard Shipping Boxes - Single Wall Standard Printer's Box with C Flute (Pack of 25) - Ideal for Mailing, Storage & Small Business Packaging

Love these boxes! The description doesn't share that there are two additional fold lines on the height so you can cut the corners and get nice folds at about 9" and 7". Makes these very versatile and I find the quality to be great! I ship odd sized product often and these are very handy. As one other review mentioned, they're about 11" at the tallest.