Specifications include, but are not limited to: The Contractor shall use White Wove, 24#, bright white paper for all Business and Booklet Style Envelopes and White Wove 28#, bright white paper for all Catalog Style Envelopes purchased under the resulting contract.; The Contractor may use either Virgin Paper or Recycled Paper for providing Envelopes under a resultant contract.; Paper stock utilized must meet or exceed the U.S. Postal Service regulations for automated mailings.; The Contractor shall provide blank and printed Envelopes having a Security Print design on the inside of the Envelope for added opacity/security.; Security Tint shall be any industry standard Security Tint design and must be either black or blue in color.; The Contractor shall provide windowed and non-windowed Envelopes.; For windowed Envelopes, the Contractor shall supply Purchasing Entities with Envelopes having a polystyrene (film view) window patch as a standard feature. 1. The Envelope window patch must meet transparency standards as prescribed by the U.S. Postal Service Regulations.; 2. Window patches must be of a strength and gauge that prevents breakage and damage under ordinary use and machine insertion.;
