Custom Full Colour Printed White PiP Large Letter Postal Box - 265mm x 220mm x 23mmPersonalised cardboard postal boxes are an amazing way to promote your business or brand. Custom print your business name, logo or box opening message in FULL COLOUR both inside and outside. Create the best first impression you can with your customers and enhance that all important box opening experience. Our personalised full colour printed Royal Mail Large Letter white cardboard boxes 265mm x 220mm x 23mm are manufactured from a protective strong