Having a very hard time getting a hold of BIson part department. The girl I hauled with last weekend broke the frame/window, so I need a whole new window minus the bars. Is there an aftermarket one I can put on? Here's a picture. I'm sure one through Bison will be very expensive, I just didn't know if they made universal ones? Bison just said it's a Statewide window. 

I think eTrailer sells drop down windows. Measure yours to make sure it will work.

you could try ordertrailerparts.com 

I have a broken one in my kiefer, but a new one is $500 so it's staying broken. I hope she's paying for it 

Try www.Horsetraileraccessorystore