Description
Rotaire 3840 R – 4″ heat outlet vent w/damper
Along with the best features of the Rotaire Grille, the Rotaire Register incorporates a unique worm-drive damper for increased operational efficiency. Just a quarter turn of the center knob opens or closes the vent wings smoothly.
In the fully open position the vent wings are completely retracted allowing 100% unrestricted air-flow.
Available in dura-beige, walnut, black, white and off-white.
