The hf 406 is capable of 321 CFM at 14 inches hg. At 3600 rpm. More than enough for residential and light commercial.I think your machine has a 406 in it.
Calling it a 46, one would think it is a step up from a 45 but smaller than a 47.
Not the case. It actually has less hg. and less cfm than a Sutorbilt #3 or a Roots 36 blower.
Is that an feature?
My point was calling the blower a 46 instead of a 406.What was your point?