NOTE: THIS IS A REPLACEMENT FLOOD VENT DOOR ONLY
The Dual Function SMART VENT series is an engineered foundation flood vent designed for use in enclosed spaces where flood protection is required and natural air ventilation is also desired.
A bimetal coil automatically opens and closes the ventilation louvers as temperature changes. No electricity is required. The louvers will be fully closed at 35˚F and fully open at 75˚F.