12in 110VAC 800CFM In-Line Duct Fan

Imagine being able to walk into a room, press a button and have the airflow only to that room immediately boosted by up to 80%, quietly. Increase ventilation to selected areas when guests are over, equalize temperatures in rooms that are too hot or too cold. Or, build your own power circulated HVAC system. Installation is easy: simply cut the flexible or rigid duct where you want the fan installed, insert the duct, and then seal the duct with a nylon strap (for flexible) or sheet metal screws (for ridged ducts).