My 2014 27KB used 28”. I got them from Wallymart every year. About $9.00 a copy. You can use up to 31” without hitting anything but over 28” is hard to find locally and expensive.
I used Rain-X C-28-4 from WaLmart. I did have to reuse the adapter clip from the original wiper blades on the Rain-X to fit properly oh the arm J hook.
2016 Pursuit 33BH, 
Linear Mode
