Enviro-tec 33-04-057 Performance Backdraft Damper Blade for CFR/CFRQ VAV Terminals

The Enviro-tec 33-04-057 is a replacement performance backdraft damper blade designed specifically for CFR and CFRQ series fan-powered Variable Air Volume (VAV) terminal units. This critical component prevents reverse airflow when the fan is not operating, ensuring proper system efficiency and climate control in commercial and industrial HVAC applications.

Key Features:

• Engineered for CFR (Constant Volume Series Flow) and CFRQ (Extra Quiet Series Flow) fan-powered VAV terminals
• Prevents backdraft airflow when the terminal fan is de-energized
• Designed for reliable performance in parallel and series flow configurations
• Compatible with both standard and low-temperature construction terminals
• Manufactured to meet ANSI/UL 1995 and 1996 standards

This OEM replacement part is essential for maintaining proper air distribution and system efficiency in building automation and climate control systems. The backdraft damper ensures that conditioned air flows in the correct direction, preventing energy waste and maintaining occupant comfort.