I prefer to ship in my own box, are there any restriction on the box I can use?

Priority Express Box

Priority Box

So,you want to ship using your own box? That'll be no problem at all. But there are a couple restrictions when it comes to your own box. First lets go over the methods you can use: (you can click any item on the list to learn more about it)

The reason we went over the Shipping Methods first is because the size requirements vary. Here's a table showing the size and weight dimensions based on the shipping method:

Shipping Method	Max Weight	Max Dimension
Priority Mail Express	70lbs	Length+Girth of 108"
Priority Mail	70lbs	Length+Girth of 108"
First Class Mail	15.99oz	22"(L) x 18"(W) x 15"(H)
Parcel Select / Ground	70 lbs	Length+Girth of 130"

"Girth? What's That?"
To figure out the girth of a package you'll take the...
Width + Height and then multiply by 2
Ex) Box Size: 16"x12"x6"
12"(W)+6"(H) = 18" x 2 = Girth of 36"

Did you know if you're shipping out Priority Mail or Priority Mail Express, the Post Office has FREE Mailing Boxes you can use? They're treated just like if you were shipping with your own boxes, except they're FREE! Just check out their Store for FREE Supplies!