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The 4074ERU is identical to 4074ERU/U
Professionals choose the Trane HTR1791 because it eliminates the guesswork of aftermarket compatibility
The 10k ohm duct sensor provides seamless compatibility with Neptronic controllers and various third-party HVAC control systems that utilize standard Type 3 curves
The low differential pressure design—maintaining only a 3 PSI gap between opening and closing—minimizes hammering and system stress caused by flash steam
it monitors all safety-related digital inputs and outputs
Resideo ZD16X24TZ Damper 326058-755 The 4074ERU is identical toThe Resideo ZD16X24TZ Parallel Blade Zone Damper is a contractor grade rectangular zone damper engineered for precision airflow management in forced air zoning systems. Constructed with a heavy duty extruded aluminum frame and parallel blades, this 16" W x 24" H unit ensures high velocity durability and low leakage performance, rated to operate up to 1. 0 in. w. c. static pressure. The motorized assembly features a 24Vac synchronous motor mounted on
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