1000ea - 4 1/2" X 5 1/2" Clear No-Printing Envelope - Allow your packing lists and invoices to be read quickly and clearly with transparent packing list envelopes. These envelopes are resistant to water, oil, and dirt. They feature an easy to use slit in the back and a fully clear surface. These envelopes also have a pressure sensitive, adhesive back that sticks to clean surfaces. Non-Printed Packing List Envelopes are available in a variety of sizes.