Here is an incredible Iron Maiden Brave New World Cardboard Promo Ad Standee from 2000.  The cardboard display measures approximately 14" x 5.5".  The item is perforated in two places.  The item does not have backing 'legs' so I do not believe it was meant to stand upright, but it does appear to be an advertising piece for their then upcoming album.  The piece has some bends/creases towards the top and bottom but overall looks nice.