Mazeeff,
They are doors. They are hinged on the bottom, we found the hinges at Home Depot, match our OEM's exactly. Catch purchased at a RV dealer, installed on top.
Under frig: found some wires, Al wire tired them together so they would not flop around.
Under stove: found a junction box (installed towards back), wires 12 volt and 110, gas line, and we think some antenna wiring. Al moved the wiring back and secured with wire ties.
NOTE: YOUR RIG MIGHT BE DIFFERENT!!
Al won't let me put anything sharp in these areas!
There is room under the stove for a drawer, if you are handy, you will need to put in slides and all that hardware. We think we have more room without all the hardware, but we only put stuff in there that is rarely used.
Good luck with your improvement.
Carol
(for those that want Al to help you do yours, you will have to catch him first!
)