The Luxaflex® Duette® Top Down Bottom Up systems can stack at the top or bottom, offering significant benefits in versatile light control, privacy, and energy efficiency, making it a flexible and practical window treatment for any room. Energy-efficient design, the innovative honeycomb design of Duette® blinds traps air to retain heat in the winter and reduce heat gain in the summer. Heat loss through windows is reduced by up to 55% according to the Fraunhofer Institute for Building Physics (IBP) in Stuttgart, Germany.