Steve, at least, the Alfa motor (a Behr unit, made in Fort Worth TX !) has quite a few wires coming out of it---I should know these things (I'm an electrical engineer) but I suppose that this is a multi-speed fan, at least. I probably had better things to do, but fit the fan into the Goose box today---pretty much...The motor is about 1 cm longer, and the fans needs to be pushed inwards to match the Goose's dimension. Fitting these up was not easy, the plastic shrouds from the Alfa were within ~1mm dimensions all around. Still will need some fine tuning to make sure the fan is not rubbing against the shrouds....
Here is picture as the fans came. The fans themselves are the same dimension (just changed to plastic, not metal as the Goose).
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