i purchased these for my 2017 Hyundai Tucson ,They do fit in the channel but however the clearance is so tight that the window glass hits it and sometimes wont close.
I followed directions to the letter and this is not the first time i installed this type !
i did install them and kept windows close for 72 hours per instructions and yes i used the scuff pad and alcohol wipes ,window channel is just to tight,i removed the and bought a different type.
I had to purchase the surface mounting type which look and work great.
i replace a 13 year old tank that finally failed.
The nice part about the new tank is that it has a Tank Fail Indicator on the top valve
Tank was shipped to me FAST also