Quality Park Large Format/Catalog Envelopes, Gummed, White, 6 x 9, 500 per Box, (QUA37181) DURABLE: Made from heavyweight 24 lb. paper stock MULTI-PURPOSE: These 6 x 9 envelopes are perfect for holding folded documents or smaller items EASE: Open-end construction allows for easy insertion of documents and printing PROFESSIONAL: Bright white stock creates a professional touch to your personal and business mailings GREAT VALUE: Conveniently packed in 500 count to reduce the frequency of repurchasing