Columbian CO625 6-1/2x9-1/2-Inch Catalog White Envelopes, 500 Count A durable ALL-PURPOSE mailing envelope. Ideal for mailing documents, catalogs, direct mail, promotional material, brochures and more. Durable 24lb white wove material. Open end closure. Moisture activated gummed seal. 6-1/2" x 9-1/2" 500 envelopes