fold down rear seat questions

i am working on a dart sport with the fold down rear seat option , and my problem is i dont have the security panel, does anyone know what size this is and the thickness of the board, i think it is normal plywood ? if you can help me with this problem please let me know thanks ed

Not sure if the size would be exact between dart sport and the duster but these dimensions may be a starting point to mock up out of cardboard and add/trim accordingly.

http://www.forabodiesonly.com/mopar/showthread.php?t=85350