[MRM]

Bob has a different style window than your old ones. He has a double pane window with an aluminum seal, probably with argon inside. They are either aluminum clad wood windows or vinyl clad wood windows. I gather they're vinyl clad. It's possible they're a contractor grade solid vinyl window, but given how far north he is I doubt it. They aren't glazed yearly in the way yours were. From an outward appearances a 2001 double pane clad window will look almost exactly like the new windows you recently bought. Unless the windows are actually failing (which is a possibility for this era of manufacturing) the installation is a bigger factor than the window product. Were your new aluminum clads Kolbe & Kolbe by any chance?