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BOX USA

BOX USA StayFlat Mailer, 12.75"L x 15"W, Pack of 100 | Stayflats Envelope Keeping Photo, Document, Artwork Protected During Mailing and Shipping, 12.75x15

  • Based on 530 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Nov 28
Order within 22 hours and 29 minutes
Available payment plans shown during checkout

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Size: 12 3/4 x 15


Pattern Name: Mailer


Features

  • Self-Sealing StayFlat Mailers: Enhance your packaging experience with self-sealing Cardboard StayFlat Mailers with high strength seams to keep your contents intact even if over packed
  • Optimal Packaging Solution and Supplies: Designed to ship or store documents, artwork, posters, blueprints, graphics, and charts
  • StayFlat Mailers: ideal for small businesses, these Cardboard StayFlat Mailers offer a professional solution for shipping needs & are designed to fit various package sizes, making them versatile for many products
  • 100% Reusable and Resealable: Simple materials, excellent performance; Made in the USA
  • 100 Pack Value Bundle: Manufactured from BOX USA and brand new

Description

12 3/4 x 15" White Self-Seal Flat Mailers. Strong chipboard mailers protect photos and documents during shipping. Manufactured from light-weight chipboard to save on freight costs. No additional stiffeners needed. Peel and seal closure. Pull tab tear strip for easy opening.

Brand: BOX USA


Color: White


Closure Type: Self-Seal


Material: Cardboard


Number of Items: 100


Manufacturer: ‎Box USA


Brand: ‎BOX USA


Item Weight: ‎33.6 pounds


Item model number: ‎BURM4SS


Color: ‎White


Closure: ‎Self-Seal


Shape: ‎Rectangular


Material Type: ‎Cardboard


Number of Items: ‎100


Size: ‎12 3/4 x 15


Manufacturer Part Number: ‎BURM4SS


Date First Available: November 25, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Nov 28

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Best sturdy mailers
Size: 12 3/4 x 15 Pattern Name: Mailer
These are the best mailers I have found for my transfer business. They are sturdy and hold their shape when mailing transfers to customers.
Reviewed in the United States on June 16, 2025 by JK Rob
    • Stands up to rough shipping
Size: 12 3/4 x 15 Pattern Name: Mailer
Great value! Sturdy quality, great seal, and keeps items safe and secure during mailing. Consistent white color and easy to use.
Reviewed in the United States on April 22, 2025 by Kaitlin Miller
    • good product
Size: 9 x 11 1/2 Pattern Name: Mailer
comic books fit perfectly in these. Bought to keep those out of landfills (storage unit auctions) and now I can sell them (for barely over shipping) instead of tossing them. They are very sturdy and my orders have arrived undamaged.
Reviewed in the United States on March 15, 2025 by M. Bunge
    • Scrapbook size durable envelopes!
Size: 12 3/4 x 15 Pattern Name: Mailer
These are perfect for mailing scrapbook size thin packs of papers and embellishments!
Reviewed in the United States on April 4, 2025 by Amazon Customer
    • Great thick stay flat mailers
Size: 12 3/4 x 15 Pattern Name: Mailer
These are great. The price is expensive hut these are just expensive in general but cheaper than uline and really thick too. Hopefully the price stays the same for a while.
Reviewed in the United States on March 5, 2025 by Dariel
    • Work great for books
Size: 9 x 11 1/2 Pattern Name: Mailer
(Repeat customer). These work out great for the shipping of books including hardbacks. Make certain you are buying 28 pt. strength as these are. I have been using these for years, no complaints from recipients. Professional white color reflects well on your online business.
Reviewed in the United States on January 25, 2025 by Marc B
    • great mailers
Size: 12 3/4 x 15 Pattern Name: Mailer
thick and strong mailers. i like to fold them in half and tape up the sides for extra stability. quality stuff.
Reviewed in the United States on March 7, 2025 by indyfan44
    • Not self-sealing
Size: 9 3/4 x 12 1/4 Pattern Name: Mailer
I really like the weight of these for shipping prints and calendars. I add a "please do not bend" sticker to the packaging for the postal workers. Overall a good product, and I bought 2 sizes: 9x12 and 13 x15. On the 13x15, the adhesive strips work fine. The adhesive strip does NOT work at all on the 9x12 size. Not even for a moment. I seal with packing tape. I bought 700+ of these for my online store and am not excited to add the extra step of having to seal each one. UPDATE: I reordered these and the new batch seals fine. I feel sorry for the worker who made the bad batch. Will reorder again as they are a good weight and sturdy for art prints. ... show more
Reviewed in the United States on November 16, 2023 by barbara schelling

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