Duck Brand Self-Locking Mailing Boxes, Catalog Size, 13" x 9" x 4", White, 25-Pack (1147639) Durable construction makes them reusable Professional appearance Self-locking tabs for easy, tape-free assembly Case of 25 Catalog mailing size boxes - Shipping dimensions of bundle: 9" x 15" x 23" - Each assembled box measures: 13" x 9" x 4" Great for mailing and storage