Smart Vent 8 In. x 16 In. Dual Function Automatic Foundation Vent Pack options:Pack of 1 commercial grade sealant developed especially

commercial grade sealant developed especially for forming permanent

high garage door

and dormers

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Smart Vent 8 In. x 16 In. Dual Function Automatic Foundation Vent Pack options:Pack of 1 commercial grade sealant developed especiallyUsed for a home with a crawlspace or any enclosed area that desires natural air ventilation and flood protection. A bimetal coil automatically opens and closes the ventilation louvers as temperature changes. No electricity is required. Ventilation: The louvers will be fully closed at 35 F (degrees Fahrenheit) and fully open at 75 F. In the event of a flood the internal floats lift to release the flood door to rotate open and relieve the hydrostatic