The product is a pack of 500 9 1/2″ x 12 1/2″ white wove catalog gummed envelopes by the brand Printmaster. Made in the United States, these envelopes are perfect for mailing and shipping purposes. The gummed closure ensures a secure seal for your documents or products. With a unit quantity of 500, these envelopes provide a reliable and efficient way to send out catalogs, brochures, or other materials in a professional manner.