Panel Face Envelopes, "Invoice Enclosed" Print, 6"L x 4-1/2"W, Red, 1000/Pack

These pressure sensitive packing list envelopes secure and protect documents that are attached to the outside of shipments. pre-printed with "invoice enclosed" on heavy, 2 mil poly hot melt adhesive backing provides strong adhesion to paper and corrugated products envelopes open along the first dimension