Resideo ZD16X18TZ Damper 321894-709 5" mounting footprint makes this

5" mounting footprint makes this a versatile replacement for many OEM configurations

Maximum Flow Efficiency: Forged brass body with full-port openings reduces turbulence and pressure drop in the liquid or suction line

What is the purpose of the CB suffix in the part number

Common Questions: What actuators are compatible with the 599-10316

When diagnosing a cracked heat exchanger or assessing soot accumulation

Resideo ZD16X18TZ Damper 321894-709 5" mounting footprint makes thisThe Resideo ZD16X18TZ is a robust 16" Wide X 18" High parallel blade zone damper engineered for precision airflow control in residential and light commercial HVAC zoning applications. Built with a high grade extruded aluminum frame and blades, this unit is designed for long term durability and low leakage performance. The synchronous motor is a 24Vac power closed spring return open actuator, ensuring a fail safe normally open position during power