The only difference between Shark NV80 and UV420 is the color scheme.
NV80 vs UV420
images from manufacturer
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The NV80 comes in White with Gold while the UV420 is in White with Grey. Otherwise, these 2 Shark Navigator Professional Upright vacuum cleaners are identical to each other.
if I ordered the dust away attachment that is described for the Navigator, will it fit the Rotator model?