Custom 9x4x3 White Literature Mailer Box – Built to Ship. Designed to Impress. Make your brand the first thing customers notice with the Custom 9x4x3 White Literature Mailer Box. Designed for compact, flat items with just enough depth for bulkier materials, this box is ideal for mailing brochures, sample kits, welcome packets, or promotional inserts. With dimensions of 9 inches long, 4 inches wide, and 3 inches high, this mailer offers a sleek footprint without compromising internal space. The durable 200 lb. test corrugated board provides excellent strength-to-weight balance—perfect for protecting materials during shipping, while keeping packaging light and efficient. The clean white exterior is ready for your brand. Choose 1-color printing on up to two sides and upload your company logo, product graphic, or event design. Whether you’re sending out a marketing campaign or onboarding materials, this box adds a polished, professional touch to your delivery. Customers receive more than just contents—they get a complete branded experience. This box is a smart choice for subscription programs, direct mail, trade show giveaways, or retail sample kits. With easy customization, quick production, and reliable durability, the 9x4x3 literature mailer is the go-to packaging for when presentation matters just as much as protection. Product Highlights Size: 9L x 4W x 3H inches Printing: 1 color, up to 2 sides Color of the box: White Weight Tested: 200 lb. Uses: Mailing Literature, Brochures, Samples. If you’re looking for a kraft brown box we have this same style in 8x8x3!
