i. PRT estimates that for each year of the contract it will need approximately ten thousand (10,000) timetables printed, folded, and delivered per the specifications herein. This quantity is comprised of both new orders and reprints. These quantities are not binding upon PRT and do not become part of the contract. ii. PRT may order timetables, as required, in any of the pricing variables as set forth in Service Provider's bid. iii. Quantities are requested as needed and overruns and underruns shall not be allowed. b. Equipment i. Service Provider to provide with bid submission the make and model of all printing equipment used to fulfill this Work. c. Storage of Files and Proofs i. The Service Provider shall maintain up-to-date computer copies of PRT timetables in PDF form, as specified by PRT. This shall be done so that reprints may be ordered and printed as required. ii. TRANSFER OF FILES – To facilitate the most efficient transfer of files in both directions, the Service Provider shall maintain an FTP server or other sufficient method of electronic delivery at the printer’s site. The server shall be available for the transfer of files in either direction. iii. All Digital Color Proofs used for correction purposes shall be kept on file by the Service Provider for three months after the effective date. The Service Provider shall be required to produce proofs that are requested by PRT within two (2) working days of the request. d. Page and Panel Siz