High Grade Corrugated Cardboard Sheets 50 Pack Brown 3mm Thickness 4 X 6 Inches Hella Sturdy Backing Ideal For Archival Mounting Scrapbooking And Zero Hassle Crafting

Sturdy 4by6 Brown Corrugated Board Sheets for Archival Art
✔️ 50 Pack 3mm Thick Mounts for Shipping and DIY Crafts

These brown cardboard backing boards are ideal for mounting scrapbooks, preserving documents, and keeping prints flat during mail. You get a pack of fifty sturdy squares that slide right under photos, cards, or small merch without adding bulk.

✅ Fifty brown cardboard sheets measure 4 x 6 inches and 3 mm thickness
✅ Consistent gauge adds proper rigidity without bloating your mailing envelopes
✅ Smooth matte face accepts ink, glue, and paints for direct crafts projects
✅ Reliable flat profile slides easily between packaging materials with zero fuss

💡 Why are heavy duty corrugated sheets preferred for mailing documents?
These handy backing boards save you headache when mailing important paper goods. Here is why they work so well:
- Solid fiber build stops creases and dents while your packages hit the road
- Steady thickness keeps flat files pressed out tight even in rough handling
- Pre cut layout saves time and keeps your desk organized for quick packing