Each Priority Mail and Priority Mail Express shipment includes USPS Tracking® service. This envelope is ideal for sending 8-1/2' x 11' size documents, including passports and passport documentation.

USPS offers free boxes and envelopes for Priority Mail Flat Rate that you need to use You CANNOT use generic boxes or your own custom-branded packaging The Different Kinds of Flat Rate Packaging The main thing you need to know about Priority Mail Flat Rate is that it comes with several different types of packaging that you can use.

Just like the Flat Rate Boxes, this paperboard envelope features a predetermined flat rate regardless of the weight or destination zone of the package.25malx certo detox rite aid What are the Guidelines for Mailing Priority Mail® - USPS

Description Product Specs Shipping Info The Priority Mail Flat Rate® Envelope - EP14F is quick, easy, and convenient, simplifying your Priority Mail® shipping process for documents. Pricing depends on the weight of the envelope with prices starting at $1.26 increasing by $0.24 for each additional ounce. The USPS considers any envelope bigger than this size to be a package, and will be subject to parcel prices. Envelopes used for flat mail cannot be more than ¾″ thick, 12″ high, 15″ long or weigh more than 13 ounces. The difference is delivery to a residence rather than the buyer having to go to the USPS to pick.

The USPS is sometimes cheaper but I've used FedEx and UPS as well.

I've essentially made an 'envelope' out of it and slide the drawing and foam board into it. Usps 11x17 envelope I flatten a cardboard box then tape up one end with duct tape.

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