The smart choice for fresh air fans, the MaxxFan Dome is a compact solution for ventilation and moisture control in small areas including bathrooms and showers. This 12V exhaust fan features a locking lid with single hand push-button operation. The removable screen makes cleaning a breeze.6" Exhaust Only Fan with Manual Lift Lid â For 1" roof thickness. Black. Locking lid with single hand push-button operation Removable screen for easy cleaning 6"" exhaust fan for 1"" roof thickness | Maxxair MaxxFan Dome, Black