Replacing dead refrigerator with a residential

I bought ours at Home Depot last year at the Memorial Day sale, paid $299. Had to make the opening a quarter inch bigger and made a header board to fill in the 6" gap on top. I just plugged ours into the existing outlet and cut a small notch in the exterior lower cover to run an extension cord through while on 30 amp at the lake, just plug into 20 amp on pedestal. I will try and figure out to run an investor to ours for our spring trio to Florida though.