ATF: North Trail - Retrofit door closer?

I have a 2010 NT 22FBS. I recently stopped by Camping World to see if there has been any changes and noticed that the 2014 has a hydraulic door closer that holds the door at the 90 deg. point and helps the door to operate smoothly. Can one of these be added to the 2010 model and if so where could I get one? My concern would be if the door frame on the 2010 model is built as strongly as the one designed to accommodate the closer.
 
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