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Mat Board Center, 25 pack 12x12 Brown Cardboard sheet, 1/8 inch thick, Flat Corrugated Cardboard Inserts for Packing, Shipping, Mailing, Cardboard Backing, Art Craft Card Board

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$16.55 Why this price?
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Availability: 19 left in stock
Fulfilled by Amazon

Arrives Friday, Mar 13
Order within 18 hours and 9 minutes
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Size: 12x12


Color: Brown


Features

  • 25 pack 12x12 inches flat corrugated cardboard sheets.
  • Use these flat card board to protect important documents from bending when posting them.
  • Multi-Purpose: Use these cardboard backing for photo backing, picture frame or welcome sign! It can be also used as cardboard inserts, corrugated packaging pads, cardboard dividers.
  • B-Flute 1/8" corrugated cardboard.
  • The corrugated sheets are made from sturdy cardboard that resists bending and folding.

Brand: MBC MAT BOARD CENTER


Material: Cardboard


Product Dimensions: 12"L x 12"W


Color: Brown


Item Weight: 1.24 Kilograms


Brand: ‎MBC MAT BOARD CENTER


Material: ‎Cardboard


Product Dimensions: ‎12"L x 12"W


Color: ‎Brown


Item Weight: ‎1.24 Kilograms


Unit Count: ‎25.0 Count


Manufacturer: ‎MBC Mat Board Center


Number of Items: ‎25


Part Number: ‎W.CT8210_G100_R3683


Item Weight: ‎2.73 pounds


Item model number: ‎W.CT8210_G100_R3683


Size: ‎12x12


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: October 18, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Mar 13

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.

Top Amazon Reviews


  • Great for arts and crafts
Size: 8x10 Color: White
They were perfect. My son and I used them for some arts and crafts and they worked very well. They are sturdy and they were packaged well. None of them were bent at the corners. All around great for the price, fast delivery, and quality.
Reviewed in the United States on November 9, 2025 by Leslie Leslie

  • Handy and useful.
Size: 6x9 Color: White
Good for a backdrop for taking eBay photos of smaller items (china, glassware, etc.) Also very useful when the smoke alarm goes off- works very efficiently waving the smoke towards a window, and shuts up the alarm. I'm not joking, our alarm goes off very easily.
Reviewed in the United States on January 19, 2026 by Fozzetti

  • Wonderful
Size: 9x12 Color: White
Very sturdy, even for being corrugated cardboard, mat board. I bought these to help with my wind spinners that I make. I wanted something beside a box to be able to put these in. Something that would keep them sturdy while shipping. These worked perfectly. Will buy again
Reviewed in the United States on October 25, 2024 by susan hepp

  • Versatile
Size: 5x7 Color: Brown
I use these to reinforce shipping prints and manuscripts. It helps prevent bending in the mail. These are great for this!
Reviewed in the United States on November 23, 2025 by Jake

  • Nice and stiff for mailing
Size: 9x12 Color: Brown
Just what I needed to mail my fragile documents
Reviewed in the United States on April 15, 2025 by Knivesrsharp

  • Decent squares but not what I need
Size: 10x10 Color: White
I like to bake and often gift my treats to family and friends. Lately it has been very difficult to find bakery box supports in the size I need. I bought these cardboard squares hoping to be able to use them in my boxes, but unfortunately they are not going to work. I need the type that is slightly waxed on top to prevent grease from going through to the bottom of the bakery box. Unfortunately these won't work for my purpose. It's my fault I didn't read the description close enough. If I needed cardboard squares for any other purpose these would probably work just fine. ... show more
Reviewed in the United States on February 8, 2025 by Wendyloo

  • strong & perfect cuts
Size: 6x9 Color: Brown
wonderfully strong
Reviewed in the United States on November 7, 2025 by denise t stone

  • Good
Size: 12x12 Color: White
They work
Reviewed in the United States on November 9, 2025 by Hocus Pocus Sweets & Treats

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