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
Monday, Apr 20
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 Name: Myunzi
Manufacturer: Myunzi
Unit Count: 20.0 Count
Color: Brown
Material Type: Cardboard
Breaking Strength: 5 Kilograms
Item Dimensions L x W x H: 12"L x 6"W x 4"H
Item Weight: 5.6 Pounds
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Apr 20
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
Good quality boxes, really nice size and shape.
Reviewed in the United States on January 8, 2026 by Michele Evans
Color: Brown
Size: 12" x 6" x 4" -20Pack
Perfect just what I needed
Reviewed in the United States on January 9, 2026 by Jackie Smith
Color: White
Size: 12" x 6" x 4" -20Pack
Perfect for the gifts I make. These are easy to fold and strong.
Reviewed in the United States on January 3, 2026 by LLLearner
Color: White
Size: 12" x 6" x 2" -25Pack
Boxes are clean, durable, great foldability, size was accurate. Great value for money overall. Item was as described on listing protecting shipped items.
Reviewed in the United States on November 30, 2025 by Chloe
Color: Brown
Size: 12" x 7" x 2" -25Pack
I recently started a small business, and these boxes are exactly what I needed. The quality is great - sturdy and thick enough to protect most items I ship, but still lightweight. They fold together easily and stay securely closed without the need for tape. The size is just right for smaller products, and I appreciate that they arrive flat to save space. Excellent value for the money and really functional. I’ll definitely be reordering as my business grows.
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Reviewed in the United States on November 14, 2025 by Robert Robert
Color: Brown
Size: 12" x 6" x 4" -20Pack
Perfect size for what we needed to ship
Reviewed in the United States on January 27, 2026 by PDD
Color: White
Size: 10" x 6" x 2" -25Pack
Tamaño y calidad perfectos Buena presentación y al armar quedan exactamente. Muy buen producto
Reviewed in the United States on January 11, 2026 by The Wizard
Color: White
Size: 12" x 6" x 4" -20Pack
These are nice boxes. You have to assemble them, but they have a nice flap to keep them closed. I put 4x6 photos. As other box commentators have noted, the interior dimensions are not 4 x 6 rather they are 3.9 x 5.9 however you can still get 4 x 6 photos to fit in them. They just are at a slight angle.
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Reviewed in the United States on October 30, 2025 by TommyC