70" WC rating is specific to the heat exchanger’s airflow requirements

This process significantly reduces stack temperatures and lowers fuel consumption without requiring a full system overhaul

Broad Compatibility: Replaces a wide range of Honeywell VS8148 and Allpoints millivolt valves used in vintage and modern gas-fired appliances

Whether you’re servicing a Voyager line or a custom furnace

it meets strict NEC requirements for "not wet" applications

ZoneFirst ZDSM-32X20 Damper R-410A 70" WC rating is specificThe 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