Your
fridge should have come with a operation manual and an installation manual. It is important that the
fridge be installed per the installation manual.
At minimum you will need a lower access panel on the back side in the shell of the trailer. You will need an upper vent to let heat and exhaust out for the
fridge. You will need a side panel to seal the inside of the cabinet so fumes and air doesn't travel from the outside to the inside storage area of the cabinet. You will also need diversion ducting to seal the top of the fridge to the exhaust grill on the back side of the trailer.
On my trailer I had to remove the stove to rebuild the diversion ducting that
Scamp built. They used vinyl duct tape and surplus
fiberglass sheet used from window and door cut outs.
I rebuilt it with using the same
fiberglass pieces and used metal flashing/duct tape. That tape sticks so well, is designed for heat and probably will never
fall apart on me. Using vinyl duct tape was cheep and efficient for
Scamp but the house of cards was doomed to failure by the cheep vinyl duct tape used.
I don't know how long it was failed before I bought my 1987 Scamp 6 years ago. This risks exhaust fumes in the trailer and excess heat warming up the whole outside of the fridge inside of the cabinet. I wish Scamp did a better job installing the fridge in my Scamp trailer back then.
Some day will come that I will redo the installation and do a proper job with tricks and fixes you can see on line. I already have a thermal cutoff switch and fan to help the fridge in our desert climate.