Thanks to everyone for the reponses! I am glad they are useful for you.
Here are some 3D shots:
Larger Example 1
Larger Example2
Larger Example 3Feel free to use the prefabs for commercial uses if you like. Also for splitting the floor like I did, it was mainly for texture alignment and for making it very easy to piece the prefabs together when building your level.
Thanks again everyone for the comments.
-raiden