The FDV is engineered with excellent performance and ease of installation in mind. The primary air and recirculated air sections operate independently of one another, while both sections are controlled by the same input signal. This design allows the primary airflow to supply the cooling demand, similar to single duct terminal units, leaving the recirculating air section to provide the heating air volume. 

• Multipoint crossflow sensor for accurate flow measurement
• 20 GA. casing on larger sizes for added durability
• Blower access panel for improved field accessibility
• Backdraft damper for separation of primary and recirculated air
• Motor vibration isolation