Typically the glass has to be ordered and custom made to fit that exact window. Typically on a tract home, it is going to be of some standard size so that might expedite the process, but not sure on that one. A company will have to come out and do a reglaze on that pane, which involves removing the old piece and putting the new one in. Not a hard task for any good window tech. Call Front Range Window and Door in Littleton and see if they can help you or at least direct you in the right place to get it taken care of.