There is no cutout or knockout panel per se. Its in the oval indent and would have to but cut out freehand as there isn't even a depression to go by. And sadly there is no wiring there if you do not have it from the factory. I have had my panel out and there is nothing back there. Here is a pic with the out in place.I see two.... one oval and one round, but neither is pre-stamped for a 'knockout' or 'cutout'.