ZoneFirst SPRD-20X8 Damper 30067439-890 The A-port provides characterized flow

The A-port provides characterized flow for precise modulation

Without an accurate signal

This UL 508 listed device utilizes a 1/2-inch nipple mount for direct attachment to electrical boxes

Fuel Versatility: Engineered for multi-fuel compatibility

Enhanced Flame Sensing: The high-output thermopile delivers a stable millivolt signal to prevent premature gas valve closure

ZoneFirst SPRD-20X8 Damper 30067439-890 The A-port provides characterized flowThe 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