matulsa register booster fan for 6" x 12" register holes with remote control and thermostat, 10-speeds floor vent fans booster - enhances ac heating&cooling airflow, quiet air duct fan for wall, white white 6" x 12" 1 is up for auction in Home & Kitchen. The current bid is $1.50, 97% below the $44.99 MSRP, in New/Like New condition. Bid on this item at our Strongsville - Drake Rd location before the auction closes.