ULTRAGREEN Series Bath Fans - Smart. Quitet. Faster Installation. ULTRAQuick installation engineered to deliver the fastest, easiest and most universal installation -expandable mounting Frame adjusts to fit any Type of joist, I-joist or truss construction ULTRAQuick installation system works in new construction or room-side retrofit ULTRALUCENT LED TECHNOLOGY - High power, dual LEDs provide superior light intensity - Dimmable LED can be adjusted to illuminate the room or provide a soft night light Long-life leds last up to 10, 000 hours