High-capacity 3-wing revolving door /Global/Sustainability/photos/RD3L%20-revolving-door-524x224.jpg Automatic revolving doors help save energy for heating or cooling wherever they are installed. Using automatic revolving doors stop air moving freely because the doors are never open – seals remain in contact with the walls at all times, and only the air in the chamber with the person going through is exchanged. Swing doors allow eight times more air exchange than revolving doors. ASSA ABLOY Entrance Systems’ large 3-wing Besam RD3L revolving door is designed to meet European market demands for automatic revolving door entrances that can handle high traffic volumes efficiently and conveniently. Available in four sizes (4.2m, 4.8m, 5.4m and 6.2m in diameter), the RD3L creates an impressive entrance that is “always open” owing to its 3-wing configuration.