You’re in the right spot. In Office Supplies, check categories like Shipping Supplies and Moving for corrugated shipping boxes, moving boxes, flat corrugated pads/inserts, and even single-face corrugated rolls. For signage or school projects, browse Presentation Boards.

• Boxes: Available in compact cubes (e.g., 6 x 6 x 6) up to larger sizes for bulkier items.
• Corrugated pads/sheets: Flat inserts in common sizes like 5 x 7, 8.5 x 11, 8 x 10, 9 x 12, 11 x 14, and beyond.
• Rolls: Single-face corrugated for flexible wrapping and cushioning.

Tip: Search by the dimensions you need and review pack counts. If you’re packing fragile items, consider sheets or pads as stiffeners, and choose an appropriate strength rating listed in product details.

Corrugated cardboard (often called corrugated fiberboard) is a sandwich of a wavy fluted layer between two flat liners. That structure helps it absorb shocks and adds rigidity for shipping and storage. You’ll see terms like B flute (~1/8 inch), indicating the fluting size, and ECT (Edge Crush Test) ratings, such as 23 ECT or 32 ECT, which provide a general indicator of stacking and compression strength.

• Boxes: Made from corrugated board for shipping or moving.
• Pads/sheets: Flat cuts used as inserts, dividers, or stiffeners.
• Single-face rolls: One liner plus fluting for flexible wrapping.

By contrast, poster board is a solid, non-corrugated sheet used for displays and crafts.

A practical approach is to start with your item’s measurements and packing needs, then match them to available dimensions.

1. Measure the item (L × W × H) and note any accessories.
2. Add space for cushioning (often 1–2 inches on all sides, as needed).
3. Match dimensions to a box that fits without squeezing or excessive voids.
4. Consider weight: Heavier items typically do better in smaller boxes; lighter, bulkier items can use larger boxes.
5. Check strength details like ECT ratings listed in product specs to align with your packing and stacking needs.

For documents, apparel, or prints, a smaller cube or a mailer with corrugated pads can reduce shifting. Choosing a closer fit helps minimize filler and can make packing more efficient.

Corrugated pads and sheets can be a helpful stiffener when mailing photos, prints, or comics. They add rigidity without much weight and can fit inside an outer envelope or mailer.

• Size up slightly: Choose pads a bit larger than the photo for edge protection.
• Use two pads: Sandwich the item between two sheets to reduce bending risk.
• Tape the stack: Lightly secure edges so contents don’t shift.
• Pick the right thickness: Single-wall pads are common; thicker options add rigidity for larger prints.

For smaller collectibles (like trading cards), look for smaller pad sizes. Packaging needs vary by carrier and destination, so consider your shipping service’s guidelines for best results.

“Cardboard” is a general, everyday term people use for a range of paper-based boards. In shipping, the more precise term is corrugated fiberboard—the layered, fluted material used for boxes, pads, and rolls. For displays and school projects, poster board (a solid, non-corrugated sheet) is common.

• Corrugated: Fluted middle layer between liners; used for boxes, pads, and protective rolls.
• Poster/display board: Smooth, solid sheets for presentations and crafts.

On this site, you’ll find both: corrugated shipping and moving products under Shipping Supplies, and poster or presentation boards in the classroom and display sections. The casual “cardboard” label often covers them all, but the product pages list the specific type.