I am working on a polygon model and I have noticed that it seems for each polygon in the model there are two polygons that occupy the same space. I am not sure how this happened in the first place, but my question is is there an easy way to fix this. I have put a good amount of time into this model and I would like to correct this problem but because I am such a newbie I am not sure what to do. A push in the correct direction would be most appreciated.

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