12x6x4 inches Shipping Boxes Bulk 20 Pack Brown, Corrugated Cardboard Box, Mailer Boxes for commerce Packaging and Holidays Gift, Small Giving Boxes for Wrapping Mailing Present
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FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
Only 5 left in stock, order soon!
Arrives
Feb 20 – Feb 21
Color: Brown
Size: 12" x 6" x 4" -20Pack
Features
- Product Dimensions: The outer dimensions of these brown shipping boxes are 12" x 6" x 4" (L x W x H), with inner dimensions measuring 11.6" x 5.8" x 3.9". Get 20 ready-to-use boxes in one practical set . Please select the size that best fits your needs.
- Durable Corrugated Cardboard Boxes: Crafted from sturdy, 3-ply recycled kraft corrugated cardboard using one-piece die-cut construction for clean, smooth edges with no burrs. These 12 x 6 x 4 inch boxes deliver outstanding compression and tear resistance to keep your products secure during shipping.
- Quick & Easy Assembly No Tape or Glue Needed: These 12x6x4 mailer boxes are designed for hassle-free setup simply fold, tuck, and go! With pre-cut slots and reinforced pressed creases, they lock securely in seconds without any extra supplies. When not in use, these boxes store completely flat, maximizing your storage space and keeping your workspace organized. A must-have for high-volume shippers, subscription services, and everyday e-commerce packaging. Simplify your shipping process and boost efficiency with every pack!
- Wide Compatibility Perfect for Almost Any Item: These versatile corrugated boxes are ideal for shipping, mailing, and storing a wide range of products from clothing, books, and accessories to small electronics, jewelry, and handmade crafts. Whether youre an e-commerce seller, a small business owner, or handling daily postal needs, these boxes deliver reliable performance every time. With multiple sizes available, you can easily meet various shipping specifications and keep your operations running smoothly. Stock up and simplify your packaging process today!
- DIY Ready Brown Cardboard Boxes: Upgrade your unboxing experience with these durable brown corrugated mailers! Their natural craft surface is perfect for custom printing add your logo, brand colors, or unique design to boost visibility and make a professional impression. Great for e-commerce brands, subscription boxes, and retail businesses, these eco-friendly shipping boxes offer an affordable way to elevate your packaging and strengthen brand identity. Turn every delivery into a powerful marketing touch-point that customers remember! Customize now and let your brand shine through from your warehouse to their doorstep.
Brand: Myunzi
Color: Brown
Material: Cardboard
Product Dimensions: 12"L x 6"W x 4"H
Item Weight: 5.6 Pounds
Breaking Strength: 5 Kilograms
Number of Boxes: 1
Brand: Myunzi
Color: Brown
Material: Cardboard
Product Dimensions: 12"L x 6"W x 4"H
Item Weight: 5.6 Pounds
Breaking Strength: 5 Kilograms
Number of Boxes: 1
Manufacturer: Myunzi
Item Weight: 5.6 pounds
Item model number: BR1264-20P
Size: 12" x 6" x 4" -20Pack
Batteries Required?: No
Date First Available: July 21, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Feb 20 – Feb 21
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.
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
Learn more about financing & leasing here.
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Top Amazon Reviews
Color: White
Size: 12" x 6" x 4" -20Pack
very good quality, I highly recommend it
Reviewed in the United States on October 2, 2025 by Maykson
Color: White
Size: 12" x 6" x 4" -20Pack
I am reviewing "12x6x4 inches Shipping Boxes Set of 20, White Cardboard Box Kraft Corrugated Mailer Box，Boxes for Shipping E-commerce Packaging, Holidays Gift and Small Business Giving Literature Mailing (White, 12" x 6" x 4" -20Pack)12x6x4 inches Shipping Boxes Set of 20, White Cardboard Box Kraft Corrugated Mailer Box，Boxes for Shipping E-commerce Packaging, Holidays Gift and Small Business Giving Literature Mailing (White, 12" x 6" x 4" -20Pack)" I ship breakable items every day for my small online business, and this is the type of mailing box I love! First, it is a nice, clean white on the exterior. It is cut well and super easy and fast to assemble. Because it is a mailer, the sides are reinforced, so it is strong and sturdy and protects the contents on the inside. I love using this style box because it makes packing easy and worry-free! At the time I ordered, this box was $26.99 for 20 boxes or $1.35 a box, which is a good value for an excellent quality shipping box.
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Reviewed in the United States on September 30, 2025 by Ann Ann
Color: White
Size: 12" x 7" x 2" -25Pack
These boxes are unusually messy- whatever machine they used to cut them left lots of little cut pieces stuck in the tab holes and narrow spaces between the flaps. When I assemble them these loose bits fall off and end up all over the floor of my office, which is a bit of a pain. Otherwise they're nice quality boxes and seem pretty sturdy. Assembly is simple and quick.
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Reviewed in the United States on September 30, 2025 by Siren61 Siren61
Color: Brown
Size: 10" x 6" x 2" -25Pack
I sell collectibles on eBay, and I'm always looking to find the best-sized box to ship the various items in. I have tons of medium to large boxes and envelopes of all sizes, but when I have a fragile item, I prefer to ship it in a box that I pad with bubble wrap. These 10x6x2 boxes are great for small items, and the smaller the box, the less postage I have to pay to ship it. Great size, and they are very easy to fold into the box shape as they arrive flattened out.
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Reviewed in the United States on October 4, 2025 by Cueball2000
Color: Brown
Size: 10" x 6" x 2" -25Pack
I am very happy with these boxes. I run a small 3D printing business/hobby and I go through a lot of boxes. Most of my boxes are 6x4x2 but I also occasionally need bigger boxes, which is why I ordered these. These boxes are perfect for some of the larger items I make. The quality of the boxes is exactly what I had hoped for and they are incredibly easy to assemble. So far they have held up really well and I don’t have to worry about any seams coming unglued like some other boxes, because these don’t have any seams due to the creative way they’re folded. One piece of tape where the lid opens is all you need to keep them securely sealed during shipping. Overall, I am very happy with them and have no complaints.
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Reviewed in the United States on September 25, 2025 by Ricks Munn Ricks Munn
Color: Brown
Size: 12" x 6" x 4" -20Pack
These boxes are well made and durable. Crush weight on sides is very good. The thickness is 1/16" E flute. Tucks well, no issues. True to size.
Reviewed in the United States on September 30, 2025 by Jeff Budz
Color: White
Size: 10" x 6" x 2" -25Pack
These are decent boxes. One of the folds isn't perfect and a bit crushed on most of the boxes, but that just means a little more care needs to be taken when folding so the box is perfectly squared up. Overall, they are very easy to fold and provide some nice protection for shipping out your products.
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Reviewed in the United States on September 29, 2025 by Ryan
Color: White
Size: 12" x 6" x 4" -20Pack
These boxes are a little on the thin side, but once they are assembled the sides are very rigid and hold together well. The top and bottom will bend slightly, but should hold up well for shipping non-fragile items like shoes and small electronics surrounded by bubble wrap. They are true to size and easy to assemble, and the color is bright white. For the price and size I feel they are a good value.
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Reviewed in the United States on September 30, 2025 by Mary B.