Smart Vent Foundation Flood Vents at the 2017 Charleston Home + Design Show 

Okay I'm back for follow-up from my first comment I really want to understand the advantage of this product I saw some more videos on why water getting under the house has advantages to avoid sudden blowout or collapse of walls from the external pressure on the walls from rushing gushing Rising fast water however the flip side I believe is very common sense once water gets under the house that will then be another massive problem to undertake to dry it out safely for the long term I see how this avoids a blowout however it does not avoid it actually promotes the Insidious entry of water and the ability of that water to exit the condensation alone will ruin your beams and flooring later on yes you may have your walls still up but you are going to have to undertake a massive overhaul under that house to dry it out to avoid very toxic mold from developing like I said anyone out there feel free to enlighten me on this

Quick Critique, Demonstration should not require manual manipulation. Should not have to further open vent (even if you expedite the process) neither should the orange have been forced to pass below. should be designed to where debris naturally flows beneath. I know this is two years old, but maybe it could be of service.

Okay so it relieves the pressure but it doesn't alleviate the water from entering under the house so that's where the problem is when the water gets under the house all of your beams and flooring are vulnerable to all of the water damage for me this absolutely makes no sense the point is to not allow moisture water inside under the house feel free to correct me anyone out there because I thought this was cool and figured when the water builds up it closes so it doesn't get under the house water under the house is a massive massive massive problem I'm sorry but I don't get it like I said anyone feel free to straighten me out with this personally I don't want any water under my house pardon my lack of punctuation I recorded this comment with voice text.. and quite frankly I don't see anything smart about this product furthermore they're not cheap and you need several of them at least