A3 Paper available in a range of paper weights ranging from 90gsm to 120gsm paper. Most modern multifunctional photocopiers can print A4 & A3. We stock A3 paper from Xerox, Canon, Navigator, HP & Q Connect. A3 paper is often used in design, marketing & architects professionals. The dimensions of A3 paper are 29.7 x 42.0cm or 11.69 x 16.53 inches.