Columbian CO921 6-1/2x9-1/2-Inch Catalog Grip-Seal White Envelopes, 100 Count A durable ALL-PURPOSE mailing envelope. Ideal for mailing documents, catalogs, direct mail, promotional material, brochures and more. Convenient and secure self-sealing Grip-Seal closure. Simply peel off release strip and press down for a quick, secure seal. Heavy-duty 28lb white wove material. Open end closure. 6-1/2" x 9-1/2" 100 envelopes