I found the factory solution very tedious and it let in lots of light and HEATWHICH IN FL, we have plenty of.
I have the windshield and side window kit from heatshield. When you buy the two together they are 35 each, so $70 total. They work great!
Carl & Dawn
2015 Greyhawk 31FS
2015 Ford Transit Connect (our TOAD on a DEMCO Dolly)
DW, DSx2, DDx2 Catx2 Dog
Tampa Bay Area of FL