Tombstone is made out of 10mm coro
It is 30" high by 23 1/2" wide
Holds 273 12mm pixels
Skull and bones are back lit. Eyes and nose you can see the pixels.
Link for Bolts (DYWISHKEY 100 Pieces M4 x 40mm/45mm/50mm/55mm/65mm Stainless Steel 304 Hex Socket Head Cap Bolts and Nuts Kit: Amazon.com: Industrial & Scientific)
Any M4 by 2 1/4" bolt will work the links are suggestions!
Xlights model available for download