Package Contents: 10 pack of 9x12 inches brown corrugated cardboard sheets for various packing and crafting needs Material Thickness: B-Flute corrugated cardboard with 1/8 inch thickness for reliable protection Durable Construction: Rigid and lightweight design that won't bend or fold easily during handling and shipping Document Protection: Use these cardboard sheets for extra protection against bending when putting important documents in the mail Versatile Backing Support: Use these cardboard backing sheets to provide stability for picture frames, craft projects, and custom artwork Shipping and Mailing Applications: Designed to reinforce and add support to keep items flat during the mailing and shipping process Corrugated Cardboard Sheets✿ Wide range of applications:The corrugated cardboard sheet can be applied to reinforce and add support to keep items flat during the mailing process.✿ For Mailing or Packing:The flat corrugated cardboard is designed to add extra preservation when shipping, use the sheets for extra saving against bending when putting important documents in the mail.✿ Crafting Ideas:Use as a photo backing, picture frame or welcome sign! Perfect for crafts that require a solid backing!✿ Specification:Size: 9 x 12 x 1/8 InchesQuantity: 10 Pieces✿ Note:Please allow a little error on the size due to manual measurement.The color might exist slightly difference due to different displays.