12" x 10" x 6" White Corrugated Boxes. These cartons were designed to fit the most popular paper sizes. Prevent damage to forms, catalogs, letterhead and other printed material by using the right size carton. White boxes present a quality look to your shipments. Applied labels and special shipping instructions stand out against the crisp white background. Preserve shipment appearance by sealing white boxes with clear carton sealing tape or white paper tape. Same strong 200#/ECT-32 construction as regular kraft cartons. Sold and shipped flat in bundle quantities. 25/Bundle.