10" x 13" Yellow Inter-Department Envelopes. Inter-Department Envelopes keep documents neat and organized to ensure efficient and accurate delivery of company mail. Use colored envelopes to code mail for quick special handling identification. Envelopes feature string and button closure for repeated use. Printed envelopes display 5 columns: Date, Deliver To, Department, Sent By and Department. Printed one side with space for 31 entries. Available in case quantities.