I installed a Samsung 23.5 cu.ft. counter depth. Took the doors off both refers and both went out and in the entry door. The Samsung was actually lighter in weight and smaller than the norcold. The counter depth box is 24" deep and door width was 26" so it fit. A little wood work but fit in same spot. I have 4 6 volt trojans and can run the ref, evening tv, lights and cpap machine and still have about 12.1 to 12.3 volts in the morning.My system runs the refer on a dedicated 1000 watt inverter which also supplies the cpap.