Refrigerator Cardboard Under the Condenser

Cardboard Under Condenser:

This is actually a piece of masonite, and it is there to ensure proper air flow. Do not remove it. On some models, this piece can been replaced by a V-Shaped piece of metal, this is also considered normal and should not be removed.  

 

Cardboard at Bottom Rear of Unit:

Refrigerators come with a cardboard or metal cover on the rear of the refrigerator, at the bottom. This should not be removed, as it protects components at the bottom of the refrigerator.