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Key Benefits: Direct OEM Match: Fully replaces and is identical to 93J3901 for exact fitment and calibration
Manual Override: Integrated lever facilitates system flushing and manual operation during service intervals
Fuel Versatility: Engineered for multi-fuel compatibility
it is critical to match the WC rating exactly
the underlying airflow or combustion issue must be resolved by a technician
ZoneFirst SPRD-20X8 Damper 30067439-890 Key Benefits: Direct OEM Match:The ZoneFirst SPRD 20X8 is a heavy duty barometric bypass damper engineered for precise static pressure regulation in multi zone residential and light commercial HVAC systems. This 20" x 8" mechanical unit utilizes a field adjustable weighted arm to facilitate effective bypass air management without the requirement for complex electronic controls or wiring. As zone dampers close and duct pressure rises, the ZoneFirst SPRD 20X8 automatically opens to
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