ZoneFirst SPRD-12X12 Damper Els PW 17895 Precise Pressure Regulation: Adjustable

Precise Pressure Regulation: Adjustable

The assembly is designed with standard 5/8" OD glass specs

Why is my heat pump coil freezing even with a new thermostat

This 72-inch thermocouple provides the necessary reach for large industrial boilers and furnaces while maintaining a stable 25-35 mV open circuit range

Precision Calibration: Fixed setpoint of

ZoneFirst SPRD-12X12 Damper Els PW 17895 Precise Pressure Regulation: AdjustableThe ZoneFirst SPRD 12X12 is a professional grade barometric static pressure regulating damper engineered to maintain system integrity in multi zone residential and commercial HVAC applications. Built from heavy duty 22 gauge galvanized steel, this 12" x 12" rectangular bypass damper utilizes a counter balanced weighted arm to automatically relieve excess static pressure as zone dampers close. By bleeding off excess air, it prevents evaporator coil