Zonefirst SPRD-9 Damper Els PW 17895 Compatibility: Direct replacement for worn

Compatibility: Direct replacement for worn or fatigued springs in V-3000 series setups

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What causes a blower wheel to go out of balance

Maintains stable head pressure in R-22 systems during low ambient conditions

featuring a precision-calibrated

Zonefirst SPRD-9 Damper Els PW 17895 Compatibility: Direct replacement for wornThe Zonefirst SPRD 9 is a professional grade 9 inch round barometric static pressure regulating damper engineered for precise HVAC bypass management in multi zone systems. This mechanical, non electrical component utilizes a weighted counter balance arm to automatically relieve excessive static pressure as individual zone dampers close. When the air pressure in the supply plenum exceeds your calibrated setpoint, the damper blade opens to bypass air