These dampers act as a block at the main duct trunk line, causing your system to function like there isn’t a vent in that particular room at all.
—
Meghan Overdeep,
Southern Living,
30 May 2026
With a curb weight of 5,180 lbs (2,350 kg), this PHEV is no featherweight, but the twin-valve dampers do a good job of controlling the ride and hiding that mass.
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