If you have ever replaced a set of vent window weatherstrip seals, you know what a job it is. Danchuk has gone to great lengths to be sure that these seals are not only an exact fit, but are made of absolutely top quality rubber. They send samples out to a scientific lab to undergo a rigorous O-zone test to determine if there will be any premature cracking. So if your vent windows need new seals, Danchuk have the fix for you. Danchuk #565 will fit any model 1955-1957 Chevy Hardtop, Convertible or Nomad.