... ,8,10,16, 21, 30Also other D-board lengths and widths and thickness can be made based on special requestAlso fire retardent ... done on both sides of the board. 6.Trade fair walls and posters D-Board can be used as wallboard, with company ... .Structural board for scenery For theatres, opera houses, TV studios and other locations that require light-weight, easily movable and recyclable walls and scenery.