We will be replacing all the old windows in our 1960's vintage lake house. We will replace them one at a time as we remodel each room. We want to use aluminum, thermal windows and want to use the ones that have the blind/shade enclosed in the glass. We have looked around our area and can't find a dealer that carries this type window. Who manufactures this type window? We thought it was Anderson Windows. We can't find a dealer close by.