Smart Vent 8 In. x 16 In. Dual Function Automatic Foundation Vent soft coolers The traditional dual-handle design provides

The traditional dual-handle design provides a firm grip

convenient vacuuming

and other dishes that beg for big flavor

Pop-And-Lock™accessory rail

canister vacuum cleaners with HEPA filter for the greatest Filtration demands

Smart Vent 8 In. x 16 In. Dual Function Automatic Foundation Vent soft coolers The traditional dual-handle design providesUsed 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