We use specially branded USPS Medium Flat Rate boxes.
Outside Dimensions: 11 1/4" x 8 3/4" x 6"
Inside Dimensions (approximate): 11" x 8 1/2" x 5 1/2"
All photos must fit within the dimensions of the closed box. When sealing a flat-rate box or flat-rate envelope, the container flaps must be able to close within the normal folds. Tape may be applied to the flaps and seams to reinforce the container; provided the design of the container is not enlarged by opening the sides and the container is not reconstructed in any way.
You must use our specially branded boxes with our prepaid mailing label. You may not use your own Medium Flat Rate box. If your order is not mailed using our prepaid postage box, your order may be voided.