I recall a post where the owner cut Reflectix sections to fit between the screen and zip up window. It's not 100% coverage but he reported it helping. It's easy to store too.
2013 F-350 CC SB 2WD 6.7PS
2013 Eagle Premier 351 RLTS
-SOLD- 2012 X23B
-SOLD- 2003 Ford Expedition 5.4, Bilstein shocks