Your best option is to keep searching on line for the fan. If that doesn't work out. You may need to purchase anew one. Try to stick with brands that have been around awhile. The part s availability is last a lot longer.
What gives??? Had this thing less than a year. A rock tore up the fan ..what to do next, throw it away????
Like I told Venton, you may be able to do a search on line and locate a 50015243 Fan. It is a rather disappointing when a manufacture offers a product and within a short period of time they stop providing repair parts for them.