Quality Park 10 x 13 Treated Inter-Departmental Envelopes - Inter-department - #13 1/2 - 10" Width x 13" Length - 28 lb - String/Button - 100 / Box - White

Inter-department envelopes are made with a material that inhibits the growth of mold and mildew to protect the product. Interior security tint protects your privacy. String-and-button closure secures your contents. Envelopes are printed on two sides with space for 52 entries with standard five-column style.