Quality Park Catalog Envelopes, Redi-Seal, White, 12 x 15.5, 100 per Box, (QUA44017) SECURE: Redi-Seal closure will ensure your contents stay safe with the licking factor out of mind DURABLE: Made from 28 lb. brown kraft paper stock EASE: Open-end construction allows for easy insertion of documents and printing PERMANENT SEAL: Special coating provides a secure and permanent seal FEATURES: 100 White, 12 x 15.5 Catalog Envelopes