| http://www.w3.org/ns/prov#value | - Shades, especially cellular shades, provide the most energy efficiency, but if you prefer the slatted look of blinds, shutters are a perfect choice.Shutters offer the look you prefer with an insulation factor because they close tightly and cover the window to help prevent outside temperature extremes from impact the indoor temperature.things to consider:Since most energy efficient shades need to b
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