These boxes are all bigger than the largest USPS Priority Mail flat rate box of 12.25-inch x 12.25-inch x 6-inch, but the largest is smaller than a wardrobe box. 12-inch x 12-inch x 12-inch (1 ...

The weight limit for Express Mail flat rate boxes is also 70 pounds, but the size and shape options are much more limited compared to Priority Mail. Express Mail offers only two sizes of envelope ...

Just as you can purchase regular cardboard moving boxes in a variety of sizes, you also have choices with wardrobe boxes. Most wardrobe boxes are at least around 24-by-24 inches, but it’s more ...