 block the sun's heat and stay comfortable indoors with smart energy efficient duet shades this is allison with blind alley here to let you know that now through august 19th you can receive a 75 rebate per shade when you purchase four to ten duet honeycomb shades with power view automation from blind alley duet shades are designed specifically to provide year-round insulation at the window and are available in over 150 fabric and color choices so you can save without compromising on style