1000 pieces 6x9" Color Poly Mailer Shipping Envelope Plastic Bags Postal Pouch
6x9" is also referred to as #1 size, 7.5x10.5" is #2, 9x12" is #3, 10x13" is #4, 12x15.5" is #5, 14.5x19" is #7. Lip size is 2" for all sizes. For example, for 6x9", it is 6" width x 9" Length + 2" lip.