Understand that most vehicles today have blades of TWO sizes on the front windshield (much like the graphic shows), and a third size on the back window. On my van it’s 24" on one side, 18" on the other side. No idea on the back, it lasts a lot longer with less useage.
Dang… no 14"? I guess I could do the 28"/13" and it would probably cover enough to be usable. And yeah, seems like the length difference has gotten a lot larger these days with the longer, more slanted windshields on some cars. Mine is a 2019 Honda Fit, just FYI. The factory sizes are 28"/14" for driver/passenger, and 14" on the rear window.