Driver's Side wiper size information “A”= Driver side always has an “A” part number & “A” wiper is a flat curve. 1 inch is equal to 25.4 millimeters: 1" = 25.4mm. Ex: 26 × 25.4 = 660.4mm But Different manufacturers use 1" inch = 25 mm (approx). Ex: 26 × 25 = 650mm (approx). 1" = 25mm is not a standard size. When you compare driver’s side wiper blade sizes from different manufacturers, you will notice the precise length in mm will vary between other brands.
Passenger's Side
Passenger's Side wiper size information“B”= Passenger side can have an “A” or “B” part number depending on the vehicle & “B” wiper is a more dramatic curve.1 inch is equal to 25.4 millimeters: 1” = 25.4mm.Ex: 20 × 25.4 = 508mmBut Different manufacturers use 1” inch = 25 mm (approx).Ex: 20 × 25 = 500mm (approx). 1” = 25mm is not a standard size.When you compare passenger’s side wiper blade sizes from different manufacturers, you will notice the precise length in mm will vary between other brands.
1955 Alfa Romeo 1900
11 "
11 "
Inches Millimeters
See wiper size information for Alfa Romeo 1900 for other years: