We've had a lot of success with register booster fans like these:
AC Infinity AIRTAP T4, Quiet Register Booster Fan with Thermostat 10-Speed Control, Heating Cooling AC Vent, Fits 4” x 12” Register Holes, White https://a.co/d/1OOHouo
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Originally posted on May 12, 2024 at 8:56:33pm
Message modified by FabLabCougar on May 12, 2024 at 8:57:01pm