Improve airflow control in compatible ventilation systems with this practical backdraft damper for round exhaust ducts. Designed to allow outgoing airflow while helping reduce unwanted reverse airflow when the fan is off, it provides a simple...
Improve airflow control in compatible ventilation systems with this practical backdraft damper for round exhaust ducts. Designed to allow outgoing airflow while helping reduce unwanted reverse airflow when the fan is off, it provides a simple...