

Most hazardous materials cannot be shipped.


Send greetings with these self-adhesive stamps. Large envelopes that exceed these dimensions will be charged package rates. Use one of these stamps in combination with First Class one ounce stamp for each ADDITIONAL OUNCE over one ounce. It costs 1.20 to send the first ounce of a large envelope and 3.37 and up for the first 3 ounces of a small package. Maximum size of 15″ long x 12″ high x 3/4” thick.A letter will be charged a nonmachinable surcharge if it’s a square letter 5″ x 5″ or larger, it doesn’t bend easily, has clasps or similar closure devices, has an address parallel to the shorter dimension of the letter, is lumpy, or the length divided by height is less than 1.3 or more than 2.5.If your package weighs a fraction of an ounce, round up to the next whole ounce (except for weights over 15 ounces but under 16 ounces, in which case you should be exact). Maximum size of 11 1/2″ long x 6 1/8″ high x 1/4” thick. The maximum dimensions for First Class Package are 22' inches long, 18' inches wide, and 15' inches thick.Minimum size is 5″ long x 3 1/2″ high x 0.007” thick.First Class Package International is the cheapest service USPS offers for international shipping. Postcards over 6″ long x 4 1/4″ high x 0.016″ thick will be charged as a letter or large envelope, depending on size. It’s a little confusing, but while domestic First Class Package Service® has a limit of 15.9 ounces (just under 1 pound), packages shipped internationally with First Class Package International Service can weigh up to 64 ounces (4 pounds).Maximum size is 6″ long x 4 1/4″ high x 0.016” thick. Maximum weight: First-Class Mail, machinable letters and Standard Mail machinable letters: 3.3 ounces, Periodicals letters: 3.5 ounces.Minimum size of 5″ long x 3 1/2″ high x 0.007” thick.The following has been referenced from the USPS Website. You wouldn’t want a design to be too big, causing the size of the envelope to be classed in the higher price group. One of the main advantages of the First-Class Package Service is that it includes. First-Class Package Service is not the same as First-Class Mail. Maximum weight allowed is 15.999 ounces (just under 1 pound) Maximum dimensions allowed are 22 inches long, 18 inches wide, and 15 inches thick (22x18x15) USPS First Class Package. Delivery occurs between 1-3 business days anywhere in the United States. Retail service is provided for shipments up to 13 oz, and Commercial service is available for shipments up to 15.999 oz. USPS First Class Package Service: The Breakdown. We help alot of clients not only design custom postcards and similar pieces of media, but also help them foresee what particular costs of mailing them are. First-Class Package Service offers the best rates for lightweight shipments.
