hisummer register booster fan for 4 x 10 floor vent duct openings, 150 cfm airflow, 17 db quiet, 3s thermostat sensor, 10-speed ac vent booster fan with remote, easy install (oil-rubbed bronze) is up for auction in Home & Kitchen. The current bid is $3.00, 95% below the $59.99 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.