Whether you're delivering documents between departments or transferring assets from one building to the next, Quality Park String & Button Inter-Department Envelopes are an excellent choice to have on hand. Preprinted labeling allows you to record the date, time & other notes before passing materials off to someone else. 52 Entry Routing Table. Seam Type: Center; Flap Type: Cheese Blade; Trade Size: #97; Security Tinted: No.