Yes we did (3.2 cf fridge). We also added a 4 cf Freezer. These units must have an inch or two air space on the sides and back. We slide the units into the original 2 way RV fridge space (with a little cabinet modification since we ended up being slightly taller due to the freezer unit. In hot weather, we place a small electric fan in the vent area to circulate the air. This makes a huge difference in keeping the sides of the ref/fzr cool. These units are not really made to be built in and their cooling coils are located in the top and sides of the units. You also need to secure them well. They are not made to be secured. We drilled a couple holes in the sides near the front to pop rivet some loose pin hinges for attachment. We did this out side on the second refrigerator (drilled right thru the coolant tubing of the first refrigerator). And the coolant tubing does not follow a nice precise, consistent pattern either. It varies from unit to unit. We have been running the same units since spring 2006. You may be able to secure the refigerator using the frame work the motor sits on in from the bottom. We like our set up.