Comfort Panel - The perimetric filtration system improves efficiency and reduces air noise., Delayed Auto-Off - Automatically turns the fan off after a set time (varies by the hood)., Direct Vent - Top or direct rear venting (horizontal) to eliminate the need for extra ducting., Filter Saturation Alarm - An indicator on the hood signals when to wash filters., Key 24 - Turns on the hood for 10 minutes automatically once every hour