Resideo ZD12X18TZ Damper 320720-756 Optimized for R22: Specifically calibrated

Optimized for R22: Specifically calibrated for R22 refrigerant systems with a standard "C" thermostatic charge

Designed for 208-230V applications

High-Temperature Durability: Engineered with specialized alloys to prevent probe degradation and "sooting" in high-intensity industrial burner applications

the E22C34301 serves as the direct replacement for the legacy E12C34301 model

Resideo ZD12X18TZ Damper 320720-756 Optimized for R22: Specifically calibratedThe Resideo ZD12X18TZ Damper is a professional grade 12" x 18" zone damper engineered for high performance airflow management in multi zone residential and light commercial HVAC systems. This parallel blade zone damper features a heavy duty extruded aluminum frame and rigid aluminum blades, ensuring structural integrity and a low leakage seal (less than 1% at 0. 5 in. WC) that maximizes system efficiency. Designed as a power closed spring return open