- Megaboard is a large advertising device with internal and external lighting. Megaboard consists of foundation, frame, support and advertising surface. The number of sides cannot exceed 3. The external dimensions of the advertising surface of one side of the megaboard are 4.00-6.00 x 8.00-15.00 meters, the height of the support pole is 8.00-18.00 meters. The back side of the single-sided megaboard should have a decorative design.