At our local Home Depot they have an assortment of 'moving boxes....that should work. And I agree, put the quilt in a plastic bag, to squish out air and to protect the quilt in case the box gets wet.....and put your name and address inside the box incase some thing happens to outside label.....Make darn sure it is insured and has tracking and a signature required. During the summer on this board remember a quilt was lost and she was heart broken for weeks.....Think of all the hours you have in the precious quilt, you want to protect it as much as possible.