02 suburban second row seating ideas ?

[Canadianat4]

Hey folks need help here i just bought a 02 suburban and i took all the seats out for room for both work and play (got two dogs) now the second row seating area there are exposed bolts and i was wondering if anyone has the measurements for this area ? . I would love.to put either plywood down or MDF so that me the wife and dogs could use the area.

Thanks in advance