depth of fridge side wall ??

[JB2004]

I am looking at adding a shelf that would go from the right side wall of the fridge cabinet to the front cabinet (just to the left of the storage door). It's ideal space to store light weight items like crackers, bread, cereal etc...There is room for a small section of closet maid type light weight shelving, but i need to be sure i have enough space between the wood paneling and the actual fridge unit for two fasteners. I'm thinking a wall anchor or molly screw. On our 2053 the fridge is located opposite the front entry door between the dinette and the bathroom . Does anyone know how much space is between the exterior of the cabinet and the fridge unit ?