The reason to buy the larger format is avoiding a seam. A display backed with two A4 sheets shows the join from across the room; one A3 sheet does not. Copy weight means it still runs through a machine that takes A3, which lets you print onto the colour rather than mounting onto it. Deep shades lift more toner, so proof first. See A4 coloured paper, coloured paper and A3 paper.

A3 coloured copy paper displayed in a bright craft and office printing workspace with posters, certificates, coloured sheets and a printer.

A3 Coloured Copy Papers for Printing and Craft

Shop A3 coloured copy papers for posters, signs, displays, classroom projects and creative office printing.