Columbian Clasp Envelopes, 6 x 9 Inches, Brown Kraft, 100 Per Box (CO955) A durable MULTI-PURPOSE envelope. Dual purpose seal allows for multiple uses. Use the moisture activated gummed seal for mailing or the strong metal clasp for repeated use and storage purposes. Heavy-duty opaque 28lb brown kraft material provides privacy of contents. Open end closure. 6" x 9" 100 envelopes A durable MULTI-PURPOSE envelope. Dual purpose seal allows for multiple uses. Use the moisture activated gummed seal for mailing or the strong metal clasp for repeated use and storage purposes. Open end closure. 6" x 9", 100 envelopes Heavy-duty opaque 28lb brown kraft material provides privacy of contents. A durable MULTI-PURPOSE envelope. Dual purpose seal allows for multiple uses. Use the moisture activated gummed seal for mailing or the strong metal clasp for repeated use and storage purposes. Open end closure.