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Optimized 120V performance delivers consistent ignition cycles in high-efficiency furnaces
providing flexibility for different loop lengths and voltage drop requirements
Engineered for high-temperature environments typical of industrial gas-fired unit heaters
Designed for high-reliability flow reversal
ZoneFirst SPRD-12X8 Damper Els PW 17895 Optimized 120V performance delivers consistentThe ZoneFirst SPRD 12X8 is a professional grade barometric static pressure regulating damper designed to maintain optimal bypass airflow in multi zone HVAC systems. As the direct replacement for the PRD 12X8, this 12" wide by 8" high rectangular unit utilizes a counter balanced weighted arm to automatically bleed off excess static pressure when zone dampers close. This critical function prevents high velocity air noise, protects the heat exchanger
