8'' Grow1 Booster In-Line Duct Fan 8" Booster In-Line Duct Fan. Duct booster fans increase airflow in hard-to-ventilate rooms. They are durable, quiet, easy to install, and fit into metal or flex ducts. Their strong motors, excellent performance, and higher temperature ratings set... $65.00
6'' Grow1 Booster In-Line Duct Fan 6" Booster In-Line Duct Fan. Duct booster fans increase airflow in hard-to-ventilate rooms. They are durable, quiet, easy to install, and fit into metal or flex ducts. Their strong motors, excellent performance, and higher temperature ratings set... $59.00
4'' Grow1 Booster In-Line Duct Fan 4" Booster In-Line Duct Fan. Duct booster fans increase airflow in hard-to-ventilate rooms. They are durable, quiet, easy to install, and fit into metal or flex ducts. Their strong motors, excellent performance, and higher temperature ratings set these... $57.98
10'' Grow1 Booster In-Line Duct Fan 10" Booster In-Line Duct Fan. Duct booster fans increase airflow in hard-to-ventilate rooms. They are durable, quiet, easy to install, and fit into metal or flex ducts. Their strong motors, excellent performance, and higher temperature ratings set... $69.00
