In essence, there is only one main difference between flat rate and Priority Mail: the price. All of your shipments are shipped in Flat Rate Boxes. Shipping with Flat Rate Boxes is a breeze. As long ...

Small Flat Rate Box; 8-5/8″ x 5-3/8″ x 1-5/8″ Inside 8-11/16″ x 5-7/16″ x 1-3/4″ Outside $11.00 $11.35 Medium Flat Rate Box; 11″ x 8-1/2″ x 5-1/2″ Inside11-1/4″ x 8-3/4″ x 6 ...

Prices start at $33.58 for a 1-pound shipment ... may be best sent using the USPS Priority Mail Small Flat Rate Box for $11.00. This box is approximately 8 inches long by 5 inches wide by 1 ...