Active Air Blinds (AAB) - radiator blinds - intelligently influence the aerodynamics to your advantage. Very similar to their sister product Active Grille Shutter (AGS), they control the air flow directly at the front of the vehicle. When closed, the engine compartment is sealed off and the air flow is directed around the vehicle. The effect is comparable to the advantages of our Active Grille Shutter: less air resistance, lower-emission driving and faster heating of certain components are just a few examples. More information: https://www.roechling.com/automotive/products-solutions/aerodynamics/active-air-blinds