17" x 21" Kraft Flat Mailers with Tab-Lock Closure - 50 Pack

• Large 17 x 21 Size: Holds photos, artwork, documents, reports, and other flat materials.
• Tab-Lock Closure: Keeps the mailer securely closed without adding extra packing steps.
• Rigid Kraft Chipboard: .038 chipboard helps protect contents from bending, crushing, and handling damage.
• Lightweight Design: Provides firm protection without the extra weight of a box.
• Flat Shipping Format: Works well for items that should stay smooth, neat, and protected during transit.
• 50 Mailers Per Case: Gives offices, studios, warehouses, and shipping departments a practical bulk supply.

Tab-Lock Kraft Flat Mailers 17" x 21", 50 case pack, rigid kraft chipboard shipping mailers for artwork, photos, documents, reports, and flat printed materials provide dependable protection during storage and delivery. These large flat mailers help you ship items that should not bend while keeping the package lightweight and easy to handle. Each kraft flat mailer uses .038 chipboard for added stiffness and support. The rigid construction helps resist bending, crushing, and everyday pressure during packing, handling, and transportation. You can use these mailers when envelopes are too flexible but a full corrugated shipping box would add more bulk, weight, or packing material than your item needs. The 17-inch by 21-inch size gives you room for larger papers, photographs, prints, drawings, presentations, and other flat products. A tab-lock design helps keep the mailer closed once packed, making it useful for busy shipping areas. The flat shape also makes finished packages easier to stack, store, label, and organize before pickup or delivery. Because these kraft mailers stay relatively lightweight, they can help reduce unnecessary package weight compared with heavier shipping containers. That makes them a practical choice when you need firm protection without oversized packaging. The kraft surface also provides a simple professional appearance that works well for commercial shipments, office mailings, creative work, and document storage.

Each case contains 50 Tab-Lock Kraft Flat Mailers and has a listed case weight of 33 pounds. The bulk pack helps you keep dependable flat packaging available for regular shipping needs. Whether you're sending artwork to customers or moving important records between locations, these 17" x 21" mailers offer straightforward protection for flat, bend-sensitive contents. These large kraft mailers can support many tasks beyond standard document shipping. Photography studios can use them for client prints, design firms can pack presentation boards, and schools can protect certificates or student work. Retail and fulfillment teams can also use them for calendars, posters, promotional materials, and flat merchandise that needs more structure than a standard envelope provides. The .038 chipboard thickness is especially useful when your contents need added support during normal carrier handling. Since the mailers ship flat and have a tab-style closure, your team can keep them organized near a packing station and prepare orders with fewer loose materials. Their 17" x 21" dimensions also suit larger flat items without requiring an oversized carton.