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check for restricted airflow
persistent communication fault codes on the thermostat
this direct replacement part is built to original factory specifications
As a direct replacement for H91WA-4
ZoneFirst ZDSM-32X20 Damper Els PW 29614 check for restricted airflowThe ZoneFirst ZDSM 32X20 is a heavy duty rectangular zone damper designed for high performance airflow management in residential and commercial HVAC systems. Featuring parallel blade construction, this 32" wide x 20" high unit utilizes a 24Vac synchronous motor for reliable power open and power closed operation. Engineered with an extruded aluminum frame, the ZDSM 32X20 provides superior structural integrity and corrosion resistance compared to
