Quality Park Open-End Catalog Envelopes, Gummed, Brown Kraft, 10 x 13, 100 per Box, (41667) DURABLE: Made from sturdy 28 lb. paper stock GUMMED: Fully gummed flaps provide a secure seal to keep contents secured EASE: Open-end construction allows for easy insertion of contents FEATURES: 100 Brown Kraft, 10 x 13 Open-End Catalog Envelopes GREAT VALUE: Conveniently packed in 100 count to reduce the frequency of repurchasing