Most printers take card only to a stated weight and only through the right path, so check the specification before buying a box for a print run. For mounting rather than printing, go heavier since nothing has to feed. Grain direction affects how cleanly it folds, which shows on a cover. See cardboard, A3 card and thermal binding covers.

A4 cardboards arranged on a bright craft workspace with colourful sheets, handmade cards, scissors, glue and project supplies.

A4 Cardboards

Shop A4 cardboards for craft, school projects, card making, signs, displays, covers and presentations.