Photo 1 of PowerScale Quiet Register Booster Fan Fits 4” x 12” Register Holes with 9-Speed Control Smart Register Vent with LCD Display, Thermostat Control, Heating Cooling AC Vent Fan, White

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Photo 1 of PowerScale Quiet Register Booster Fan Fits 4” x 12” Register Holes with 9-Speed Control Smart Register Vent with LCD Display, Thermostat Control, Heating Cooling AC Vent Fan, WhitePhoto 2 of PowerScale Quiet Register Booster Fan Fits 4” x 12” Register Holes with 9-Speed Control Smart Register Vent with LCD Display, Thermostat Control, Heating Cooling AC Vent Fan, White