Vendor will print daily files which will involve single- and two-sided letters, using 2d technology to household multiple letters, insert letters and (supplied inserts at times) into a supplied #10 window envelope or a 6x9 tint window envelope depending on how many letters are being inserted into the envelope. The furnished envelope will have the return address pre printed. Apply postmark or indicia and mail. Vendor will be able to provide a weekly billing to the Tax Commissioner. Quantity: The mailings will occur daily with an annual estimate of 390,000 letters. Artwork: Vendor will process data files supplied by the Tax Commissioner. Flat Size: Final flat size of letters are 8 ½” x 11”. Paper Stock: Letter: 20# white offset, #10 window security tint envelope and a 6x9 security tint window envelope inventory will be maintained by the vendor by ordering them from the source provided by the tax department (these will be provided by the tax department) Ink: Letters print black on 20# offset, these can be either one sided or two sided letters, with 2D technology applied for householding of multiple letters into one envelope. Finishing: Fold and Insert letters into provided #10 tint window envelope or a 6x9 window tint envelope.