Brown Kraft String & Button Box-style Interoffice Envelope, #97, Two-sided Three-column Format, 10 X 13, Brown Kraft, 100-boxAs employees pass materials back and forth, they can record the department name and notes in the dual sided, preprinted boxes. This way, an organizational system will be clearly defined, helping inter office communication flow smoothly and effectively. Crafted from durable paper with string and button closure, the envelopes are also tear resistant and reusable. Seam Type: Center; Flap Type: Cheese Blade; Trade Size: #97; Security Tinted: No.