I live on the east coast and am about to get slammed with Hurricane Irene. I’ve taken all the necessary precautions I can think of to make sure everything is in order outside the house. However, there is one thing that I’m not 100% certain on. That is, would it be best to have all the foundation crawl space vents left open during the event or closed. I know that with the ‘Smart VENT’ product they open automatically to allow any flood water to automatically enter and exit through the frame opening, relieving the pressure from your foundation walls. However, I have the standard sliding vents that are manually operated. Just wondering if anyone knows if the same rules apply.