Photo 1 of Hisummer Register Booster Fan, Quiet Vent Fan for 4" x 10" Duct Openings, 10-Speed Air Boosting Register, Remote Control AC Booster Vent for Home Heating & Cooling Solutions

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Photo 1 of Hisummer Register Booster Fan, Quiet Vent Fan for 4" x 10" Duct Openings, 10-Speed Air Boosting Register, Remote Control AC Booster Vent for Home Heating & Cooling SolutionsPhoto 2 of Hisummer Register Booster Fan, Quiet Vent Fan for 4" x 10" Duct Openings, 10-Speed Air Boosting Register, Remote Control AC Booster Vent for Home Heating & Cooling Solutions