I've never seen an Eaton blower from the bottom. Are those four ovals supposed to be there, or were they "added?"
Either way, it looks like Ray Charles did that porting! I'd be royally pissed if I were the owner.
The four 'ovals' are silencer ports - I guess they're supposed to let excess air back INTO the blower housing to quiet the blower down overall. Some guys actually plug them and claim that this makes the blower perform better. As far as I know, no one actually makes them bigger when porting a blower (except this guy, apparently).


