Made my own with sun screen material I mail ordered from Home Depot for $40. Very easy to sew. Hemmed a 1/4" line onto the edge with loops that attach to Velcro hangers that share the slot in the awing roller with a light rope. I do not roll the shade up with the awning. I folds up easily. If your awning only has two slots not sure how you are going to make this happen. If you make one hemp a line into the top and leave extra at the ends to tie to the awning arms.
Sun Screen ImagesWhen the sun angle is right into the awning area on a hot afternoon the screen is indispensable. Folds up to about the size of a bed sheet.