340ea - 9 X 12 0.022 Brown Chipboard Sheet - .022 Thick - Stabilize your packaging using small chipboard sheets. These sheets are made of pressed, recycled paperboard. They feature a thick and sturdy body with a grain that runs throughout the length of the sheet surface. Small Chipboard Sheets are available in a variety of sizes and offered in 0.022 thick sheets. They are packaged by the case. Personalize the look of your chipboard sheets: Customize itChipboard Sheets can have a variance in color due to the paper stock available.