The obj file contains four objects:
A not walkable lowpoly version (29 polygons)
A (slightly) higher and walkable version (37 polygongs, not realy much difference :P )
A door for the higher poly version (26 polygons)
And inside the higher poly version some toilet paper (15 polygons)The other files are: The needed mtl file for the textures, the uv map for the toilet model (1024x1024) and a small uv map for the toilet paper (128x128). The lowpoly and the highpoly version + the door share the same uv map. | 
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