Product review (2 stars): Not recommended
While this may be a good product, the company evVivreHome was not helpful.  I ordered the product after getting a go ahead from the installer.  However, after going over the installation directions, it was clear that an extra intake air vent was needed.  Since I live in a Condo this quickly became complicated.  As it turned out, it was necessary to make a hole in the foundation, dig a trench and inset the air intake damper.  This did not sit well with the Condo Association and I attempted to return the unpacked range hood.  The request was denied without much explanation other than that the return fell outside their policy range.

I suspect that the vent would work well in new construction but that was not clear in the description.  At any rate, I wouldn't recommend this vent due to evVivreHome's  return policy.