sanycasa register booster fan for 6" x 10" register holes, quiet vent fan booster with intelligent thermostat, improves heating cooling, app control, 10-speeds, manhattan smart register vent, sn 6 x 10 inches satin nickel is up for auction in Home & Kitchen. The current bid is $1.00, 98% below the $55.99 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.