Smart Vent Foundation Flood Vent | Insulated Series | 1540-511

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  • Smart Vent Model 1540-511 for air ventilation and flood protection with 400 sq.ft. coverage

Smart Vent Stacker 1540-511: Available in 5 - 7 Business Days

$15.00 (Fixed shipping cost)

Product Description


Ideal for use in a home crawlspace or any other area that needs both flood protection and air ventilation, the 1540-511 Dual Function Stacker is a great solution thanks to its smart design.

Stacker Models are twice as efficient as a single unit, and are a great solution for:

       • large amounts of square footage requiring flood protection

       • situations where there is not enough wall space to fit single units

With flood insurance costs on the rise, our smart flood vents have never been more important. Protect your home and lower your flood insurance costs at the same time with a flood vent from Buy Smart Vents. Order yours today.

  • Made in the USA, our smart flood vents are FEMA-accepted.

  • Easy to use and install.

  • Up to 400 square feet of flood coverage.

Model Number: 1540-511 Available in 5 - 7 Business Days

Color: Stainless (Standard)

Flood Coverage: 400 sq. ft.

Air Ventilation: 102 sq. in.

Vent Size: 16-in. x 16-in.

Rough Opening: 16 1/4-in. x 16 3/8-in.

Spec Sheet: view

Installation Manual: view


About Dual Function Vents


These vents are used for a home with a crawlspace or any enclosed area that desires natural air ventilation and flood protection.

Flood Protection

The vent door is latched closed until it comes in contact with flood water. Entering flood water lifts the patented internal floats which unlatch and allow the door to rotate open. This allows the flood water to automatically enter and exit through the frame opening, relieving the pressure from the foundation walls. Certified flood debris clearance is demonstrated with a 3" diameter opening when the flood door is activated.


A bi-metal coil automatically opens and closes the ventilation louvers as temperature changes, no electricity is required. The louvers will be fully closed at 35F and fully open at 75F, regardless of the louvers' position, open or closed. In the event of a flood the internal floats lift to release the flood door to rotate open and relieve the hydrostatic pressure.


Please Visit the Smart Vent Products Site to view the full line of Smart Vent Products including stacker models, accessories, bucks, etc.

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