Interdepartmental envelopes feature standard, interdepartmental print format for efficient internal correspondence. Sturdy, 32 lb. Kraft stock protects your documents. Use string-and-button closure to secure contents. Envelopes offer a standard style with five columns printed on both sides. Columbian Kraft Interdepartmental Envelopes - Inter-department - 10in. Width x 13in. Length - 32 lb - String/Button - Kraft - 100 / Box - Brown Kraft is one of many Interoffice Envelopes available through Office Depot. Made by Columbian.