MAXXFAN MaxxShade - Blind for Maxxfan Vents. Maxxair introduces the Maxxshade and Maxxshade Plus interior vent shades to block light out of the Maxxair Maxxfan Deluxe Roof vent Fan. The Maxxshade is the perfect solution for blocking out light, day or night. Features Fully retractable, spring loaded roller shade with secure snap-lock closure. The shade material has a reflective backing to block light and reflect heat. Will not interfere with the normal operation of the roof vent or powered ventilation fan. Easy installation using existing garnish ring. Built in cool White LED lighting option available for 12 volt powered ventilation systems.