Concerning fitment:
If you want to cover your fridge then retract the cover to open the lid you’re limited to the height (about 18-19 inches). And the length of cargo hatch door to the cargo cover’s spool (about 27 inches).
It looks like the three smallest Dometics will fit properly. You might be able to go with a longer model if you incorporate a slide, and take into account its height off the floor. There’s enough slack in the cover where it will “stretch” a little over a ~20 inch height.
https://epi.dometic.com/externalasse...4617_77453.pdf