To me I utilize the US government's standards for food maintenance temperature. This includes the door. it has shelves and I paid for them.
I even went SO FAR as to.
Seal comb the rear edge of the unit and pass air conditioner outlet air around the unit. What a miracle. Loss of around 30 degrees on the refrigerators non working surface ambient temperature. But it needed AC always on.
YANK! HURL! in went the SunFrost. The Norcold should have been named NORCOOL. I had more fans going in that compartment than Carter has Little Liver Pills. at 240 watts instead of gas it was useless. 3 brand new units tried. "Sal" at KOOL FUN (a rebuilder and manufacturer near Pasadena) finally admitted "Jeese wotta hassle".
The SunFrost worked perfect in 100+ F temperatures. Door shelf temp remained at 37 degrees even at 4PM. The freezer? Try -5F. Hard ice cream. But that was a huge, incredibly heavy unit that had to be loaded through the emergency door of the Crown. A 10-wheel converted Cummins powered, roadranger geared school bus.
