













200 Pack 5x7 Corrugated Cardboard Sheets for Mailers, Flat Packaging Inserts for Shipping, Mailing, Arts and Crafts Supplies, Dividers, DIY Projects, 2mm Thickness
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Adam Hermiston
09-06-2025Smaller than I thought they were
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Leslie A.
Greater than one weekThis is hands down the best to pack prints. They are thick and sturdy and keep prints safe when shipping out to my customers. I recommend these backing boards. They are true to size and come safely packed.
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Kat
> 3 dayDefinitely helped me with my projects
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Leslie R
> 3 dayI ship out trading cards, and I use these in the envelope, so the card doesn’t bend. These things are VERY stiff, and work amazingly well.
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Mary L. Harrington
> 3 dayPerfect thickness for my postcard shipping needs.
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Sherri
> 3 dayI think most people mistakenly think the thicker the cardboard, the sturdier it is. However, these inserts are thin yet much sturdier than the thicker board I previously used. Ive purchased them three times now and all have been in great condition. As far as size, they measure exactly 5x7.
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Bambi
Greater than one weekDurable and easy to assemble
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J
> 3 dayPerfect to ship inside my envelopes with my stickers to keep them from bending.
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Reviewer
> 3 dayI used these for an art craft. They were very sturdy, but required a lot of glue to get string to stick. It did the job, but was pricy for cardboard.
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Molly Fillerup
> 3 dayThese are exactly what I needed to ship out paper goods without them bending in the mail. I am so glad that they came undamaged and better than I thought theyd be. Will purchase again.