Abstract: A portable knockdown structure for use in supporting displays at trade shows and the like. The structure includes one or more modules which are connectable edge-to-edge. Generally, each module includes a pair of display support frames hinged together in a manner to allow the two frames to form a predetermined stable obtuse angle therebetween. The lower edge of the lower frame contacts the floor as does a T-shaped leg which extends from the upper portion thereof. A swinging link connected for rotation to the upper frame and removably bolted to the T-shaped leg forces the upper frame into the obtuse angle engagement with the lower frame to form a stable structure. Thereafter the lower frame supports a display panel at an upwardly facing angle for ease of viewing and the upper frame supports a display with a slightly downward angle for ease of viewing and reduced glare. The modules may include auxiliary devices, such as lights and shelves which connect to the frame by clamps, bolts, or hook and pile fasteners.