A multi-panel display device having a center panel positioned between a first side panel and a second side panel and a header panel and a blank for a multi-panel display device. In one aspect, the invention can be a blank for a multi-panel display device comprising: a center panel; a first side panel attached to the center panel along a first pre-weakened line; a second side panel attached to the center panel along a second pre-weakened line; and a header panel detachably coupled to the second side panel along a third pre-weakened line.