Dometic 3104928.019 Return Air Grille for Brisk Air. Ducted Quick Cool. Color: Polar White. Millions of people around the world buy and use Dometic products. They're RV users, boat owners, truck drivers, campers, outdoor people. And all part of a growing movement a longing for freedom and adventure, a desire to explore the world and to stay away for extended periods of time. We call it mobile living. Our mission is to make mobile living easy.