
We had 15000 letters to send home using the most economical and efficient manner possible. These envelopes gave us the tools to do so. Our folded letters were hand stuffed easily thanks to the design of these envelopes.In addition, we wanted to keep track of which sub-set each letter belonged to so we added a code into the return address. If the letter returned for any reason, we could read the sub-set right through that window.

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