Please Note: This product ships in single envelopes (1-5) and in packs of 10. An order of 1 equals either (1-5) envelopes or a pack of 10 envelopes depending on your selection under Format.
The Priority Mail® Flat Rate Envelope is quick, easy, and convenient, simplifying your Priority Mail® shipping process for documents. Just like the Flat Rate Boxes, this paperboard envelope features a predetermined flat rate regardless of the weight or destination zone of the package. This envelope is ideal for sending 8 x 11 size documents, including passports and passport documentation.