1000 Economy size, 6 1/2" x 9 1/2", Double-Sided, Full Color Mailers on USPS Required .007 inch thick cardstock. *These mail pieces are USPS specification approved for EDDM (Every Door Direct Mail) Program. Same or next business day service! Shipped in two (2) Priority Mail® Medium Flat Rate Boxes $12.35@ (with 2 day expected delivery) You will be prompted to upload your file upon completion of checkout. 6-1/2" x 9-1/2" no bleeds.