[Mulsanne Blue]

Any good sources for large sheets of material they made into seat/trunk dividers back in the day. From what I've gathered off the internet, the material is referred to as chipboard. Matching pictures indicates its unbleached. Uline sells 40x48 in 0.022" to 0.120" thicknesses, but the cost is in the hundreds. Only need a couple of sheets. Dividers sold by the parts guys have the correct cut, but are made mostly out of solid black cardboard.