NOS never installed, was stored as backup pump look at pics for size and condition, the specs that I found says 460 w motor can pump from 660 ft 2 speed motor 60 gal per min 3/4 hp, I will post more info as I find it, I read that these parts are compatible with newer Grundfos pumps and vice versa, if you are serious I can call Grunfos and send them pics and they can help us with more info on this pump, it was sitting in the box as a back up since 1998 when it was purchased from what the lady could remember but the Grundfos pump this was to replace never quit working, she said her husband always had a back up