Multi-Refrigerant Support: Optimized for peak performance with mineral

This Protech 42-25101-03 is designed with tight laminations to reduce audible noise during operation

OEM Compatibility: Exact replacement for Reznor heating equipment

which this 23mA unit is designed to eliminate

Service Efficiency: Integrated front charge port allows for easy manifold gauge connection during maintenance

ZoneFirst SPRD-20X10 Damper Els PW 17895 Multi-Refrigerant Support: Optimized for peakThe ZoneFirst SPRD 20X10 is a heavy duty barometric static pressure regulating damper designed for precision airflow management in multi zone HVAC systems. Built with 22 gauge galvanized steel, this 20 inch wide by 10 inch high rectangular bypass damper is engineered to handle airflow ratings up to 2000 CFM. As zone dampers close, duct static pressure naturally increases; the SPRD 20X10 automatically compensates by opening its single blade mechanism