Best 20 x 20 Box Mailers of 2025

The Aviditi Mailer Box is designed to provide outstanding protection for your important documents during shipping. With its sturdy construction and crush-proof design, you can trust that your items will arrive safely. The box features convenient side flaps and a front tuck closure, making it easy to secure your contents without the need for tape or glue. This means you can assemble your mailers in seconds, saving you time and effort when preparing shipments. Ideal for use with UPS, USPS, and FedEx, this box is perfect for any mailing needs you may have.

The Aviditi Gift Box Mailer is designed for your packaging and shipping needs. With protective side flaps and a secure tuck closure, it ensures that your items stay safe during transit. Made from strong 200#/ECT32-B kraft corrugated material, this mailer provides maximum protection for your important documents and gifts. One of the best features is its quick assembly; you can put it together in seconds without the need for tape, glue, or staples, making it convenient for busy users. This product is perfect for anyone looking to securely package items with ease.

The BOX USA Deluxe Literature Mailer is a pack of 25 kraft corrugated mailers measuring 20" x 16" x 2 1/2". The mailers feature protective side flaps and a front outside tuck closure, providing maximum protection for important documents. Assembling the mailers is quick and easy, without the need for tape, glue, or staples. Proudly made in the USA, this product is perfect for sending important documents with peace of mind.

AVIDITI Shipping Boxes are perfect for packing, moving, and storage. They are designed to fit various personal items and household supplies, and they are heavy-duty enough to hold up to 65 lbs. These single-layer corrugated boxes are lightweight and come in extra-large, large, medium, and small sizes. The 20-box bundle is a great value for bulk buying. Moreover, they are eco-friendly and made in the USA.

Boxes Fast Mailers are designed to provide maximum protection for your important documents. With their secure side flaps and front tuck closure, you can trust that your items will stay safe during shipping. Made from durable corrugated material, these mailers are built to withstand the rigors of transit. Plus, they are incredibly easy to assemble—no need for tape, glue, or staples. This means you can quickly pack and send your items without any hassle. Proudly made in the USA, these mailers combine convenience with quality for all your shipping needs.

The Aviditi Jumbo Fold-Over Mailers are perfect for shipping and storing oversized flat items such as portfolios, maps, and blueprints. These one-piece mailers fully open for easy packing and are crush-proof. Simply lay your product on the flat mailer, fold in, and seal with tape. The attractive 200#/ECT-32-B white corrugated construction makes an impressive presentation. Proudly made in the USA!

Introducing the uBoxes Large Moving Boxes, the perfect solution for all your moving needs. These large boxes come in a pack of 12, measuring 20" x 20" x 15" each. With their spacious dimensions, they provide ample space to pack and transport your belongings. Whether you're moving to a new home or storing items, these boxes are a reliable choice. The package dimensions of 35.0" (L) x 20.0" (W) x 8.0" (H) ensure easy handling and transportation. Made in the United States, these boxes are of top-notch quality and durability. Say goodbye to the hassle of finding multiple boxes for your move and trust uBoxes Large Moving Boxes to simplify your packing process.

The BOX USA Jumbo Mailers are perfect for sending oversized flat items such as portfolios, maps, and blueprints. These mailers open fully, allowing you to easily place your product in and seal it securely with tape. Their attractive white corrugated construction not only protects your items but also makes a great impression on recipients. Plus, you can feel good about your purchase knowing that these mailers are proudly made in the USA, supporting local manufacturing. These features combine to provide a convenient and effective solution for your mailing needs.

The Aviditi Shipping Boxes are designed to handle heavy loads, supporting up to 65 pounds. This makes them ideal for packing and moving items like clothing, books, and various household goods. With a 32-pound edge crush test certification, these boxes ensure durability during transport. Additionally, the 10-pack bulk bundle offers excellent value for your shipping needs, whether for personal use or small business purposes. Made from lightweight yet sturdy corrugated cardboard, these boxes are perfect for organizing your space while being recyclable and reusable, making them an eco-friendly choice.

The Aviditi Mailer Box is designed for shipping oversized flat items, making it ideal for portfolios, maps, and blueprints. Its one-piece construction allows you to easily lay your product on the flat surface, fold it in, and seal it securely with tape. This feature simplifies the packing process and saves you time. The mailer opens fully, providing ample space for your items, and its attractive white corrugated material ensures a professional presentation. With a sturdy 200#/ECT-32-B construction, you can be confident that your items will be protected during transit.