Mercedes-Benz Actros Operating Instructions Manual page 321

Wind deflector
319
Example: semitrailer tractor vehicle, StreamSpace cab
S = 580 - 700 mm: semitrailer tractor vehicle with Stream or BigSpace cab, side air deflector
and an add-on height of 765 mm
Example: platform truck, StreamSpace cab
S = 50 - 700 mm: semitrailer tractor vehicle with Stream or BigSpace cab and an add-on height
of 765 mm
Z