Curved blade geometry - the blade curve is tuned to reduce turbulence, so air flows quietly even at high velocity.
Ribbed flange - the folded rim adds stiffness so the vent stays flat during transport and installation.
Split face plate - the face separates from the collar for fast cleaning without removing the whole unit from the ceiling.
Snug collar fit - the collar is sized to standard duct openings to minimize air leakage around the joint.
