1.1 #10 mailing envelopes must work with BlueCrest DMT (Pitney Bowes Rival) production inserting equipment and Pitney Bowes Relay equipment machine. Envelopes must be able to accommodate insertion and mailing of up to four 4” x 8” printed inserts, one courtesy reply envelope and up to four folded sheets of 20# bill stock or 20# multipurpose copy paper. 1.2 Glue on #10 envelope side seams must seal to with 1/8” of top edge to avoid jamming in equipment. Glue for windows on #10 envelopes must completely surround the window opening to keep glassine in place during processing and mailing. 1.3 Envelopes must be free of extraneous glue, including around the glassine window. 1.4 Envelopes must be free from wrinkling, twisting, tears, and folds.
