Wild guess as I have no recent info on the trailer group?
One way that shades, etc are attached is on metal spring clips screwed up to the top of the valance. Can you look up in the area above where the shade should be and spot a metal clamp about 1/4 inch wide?
Is there metal along the top of the shade with indented grooves along each side?
Really crude drawings as seen from end of shade. Possibly two clips spaced along the top inside the valance to snap into grooves on shade, etc.
Click this snip for better view!
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Richard
Why no RV year, make and floorplan on MY signature as we suggest for others?
I currently DO NOT have one!