Provides constant ventilation
Cannot be closed; interior baffles make this ventilator rain and splash proof
Standard model (shown) has solid stainless steel top; Trans version includes a center translucent plate
These UFO ventilators may be used in combination with electric ventilators or blowers
Plastic interior is included and serves as a mosquito screen as well
Deck cut-out size is 2-7/8"; free flow area is 4.93 in