How do SMART VENTS provide so much coverage?
You may have heard that FEMA requires a vent with 1 square inch of opening per 1 square foot of enclosed area, referring to vent dimensions in proportion to the space to be vented. This is only partially correct. FEMA guidelines (as outlined in Technical Bulletin 1-08) do state that a non-engineered flood vent solution must (among other requirements) provide 1 sq. in. of opening per 1 sq. ft. of space vented. This is only in reference to non-engineered openings, however; all of our flood vent products are certified engineered openings. In accordance with the further guidelines of TB 1-08, our vents have been tested, rated, and certified for their coverage of 200 square feet per unit by the International Code Council.
