Aviditi PL12 Pre-Printed Envelope, "Packing List Enclosed", 5-1/2" Length x 4-1/2" Width x 2 mil Thick, Orange (Case of 1000) Panel face, colored Packing List Envelopes are pre-printed with "Packing List Enclosed" on heavy 2 mil poly Hot melt adhesive backing provides strong adhesion to paper and corrugated products Envelopes open along the first dimension 1000 per case Measures 5-1/2-inches length by 4-1/2-inches width by 2 mil thick