Description:
An irregular pentagon-shaped tile marked with many latching points and a strange bevel on one side.  Back of the tile looks like there were some mounting issue with this tile as there are 4 "factory" mounting holes and two field made holes.  Also appears to be two indentations from the Starship on the tile.
 
Size:
Length: 9" to 6"
Height: 8.5" to 5"
Thickness: 1.5" to 1.75"