Resideo ZD10X20TZ Damper 320074-702 this assembly typically includes the

this assembly typically includes the mounting gasket and hardware required to create an airtight seal against the collector box

Safety Optimized: The SPNO close on fall logic prevents gas valve activation if the venting system is obstructed or the draft is insufficient

They are functionally and physically identical

The universal bonnet allows for direct-coupled mounting without additional tools

Cross-Compatibility: Confirmed 100% interchangeable with part number 13K1301 for simplified inventory management

Resideo ZD10X20TZ Damper 320074-702 this assembly typically includes theProfessional grade zoning requires reliability, and the Resideo ZD10X20TZ delivers with a heavy duty parallel blade zone damper design. Engineered for high performance HVAC zoning systems, this 20 inch by 10 inch rectangular unit features a 24Vac synchronous motor mounted on the 20 inch side for streamlined installation. The power closed spring return open configuration ensures a fail safe normally open state, maintaining airflow if power is lost.