Selectable airflow settings: 50/80/110 CFM (24/38/52 L/s) Virtually Silent operation Design - ideal for 2x8 joist construction and taller Energy-efficient, self-compensating DC motor Continuous Flow Integrated Humidity Sensor (available with applicable models) Time Delay Lighted grille (on SC50-80-110L models only) Built-in, soft-close backdraft damper Adjustable EZ Mounting Frame included Duct connector included For ceiling installations only Sones <0.3-0.6-0.9 Duct size 6" (152mm) Voltage/Phase/Hz 120/1/60 Power rated 5.0-6.8-11.0 W Amp 0.2A