Its been 14 years and I have not replaced the wiper blades (always sunny in Socal) and I am going in a trip to UTAH in 3 weeks, so I thought it was time to get some new ones. I have a FL chassis, but...
Wiper blades have nothing to do with the type chassis you have. ALL wiper blades are installed aftermarket by the RV maker. You just measure the length of the blade and usually Wal Mart super centers has the larger style blades needed for a motorhome. Doug