Never finished my 30 amp outlet today, I bought the wrong one.
But I tossed in a battery and fired up the generator to get the slides open. I was able to get some measurements for you as well as look her over for any signs of mice as I live in the woods.
Didn't see any..
The 2 top shelves on either side measure 23 inches across and 18 inches deep and the cubby under the radio on the right side is approx 22 inches across and 15 inches deep. I will probably add a Bluray player in that spot myself this year. It has an 110 outlet under there, I assume yours does too..Any normal component should fit.