Product review (4 stars): Same flaps as the others, but well built and sturdy.
I was hoping that the flap mechanism on this one would reduce some of the drag as the others face, but I was wrong. Overall this is a nice product and does work as a nice vent hood. However, this does include a flap that is not well displayed and if you are looking to increase the amount of air put out by the vent, look elsewhere.