I put 2x4's on the tailgate of the truck and slid an "apartment size" fridge right in the door. Wife helped. Only lost one drawer due to height difference. I would never want to go back to that old propane fridge. Now it gets cold fast and even freezes ice cream with twice the room inside. I don't use an inverter. I just run my generator every 4 hours or so. I'd say I could go a lot longer without starting the generator but I give it some juice every 4 hours. If you always camp plugged in. It's a no-brainer. OH! And the chance of the fridge catching fire goes way down. I wouldn't buy a RV with a propane fridge again.