Our windows are Windsor Pinacle Clad/Wood windows using only heavy-duty .050 extruded aluminum cladding rather than thin roll form aluminum. It is more durable and more resistant to exterior damage including dents and chips. Because of the 2×6 construction the sills are nice and deep allowing more room for beautiful blinds and extra energy saving insulation.
Check out their website: http://www.windsorwindows.com/products/pinnacle.page