Quality Park Heavyweight Catalog Envelopes, Gummed, Brown Kraft, 6.5 x 9.5, 500 per Box, (40865) MULTI-PURPOSE: These 6.5 x 9.5 envelopes are perfect for storing and mailing documents, catalogs, photo's and other home and business mailings DURABLE: Made from heavyweight 28 lb. paper stock GUMMED: Fully gummed flaps provide a secure seal to keep contents secured IDEAL: These catalog envelopes are a great option for mailing, storage, and organizing