Combustion Optimization: Prevents excess air infiltration

This design effectively prevents evaporator coil freeze-ups and eliminates excess air noise

Moving the sheave discs closer increases the pitch diameter and driven speed

The unit includes the integrated pin connections required for the existing harness on F50 and F58 models

Common Questions: Can I reuse the old 92-68 gasket if it looks intact

Resideo ZD10X20TZ Damper 328140-751 Combustion Optimization: Prevents excess airProfessional 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.