Resideo ZD12X22TZ Damper 340155-7024 ensuring the air cleaner cells

ensuring the air cleaner cells are only energized when sufficient HVAC system airflow is detected

By varying the air volume through the condenser

ensuring the static pressure requirements of your ductwork or plenum are met without unnecessary amp draw

Automatic Stroke Calibration: The self-adjusting linkage eliminates manual setup by automatically calibrated to strokes from 1/2" to 1"

Resideo ZD12X22TZ Damper 340155-7024 ensuring the air cleaner cellsThe Resideo ZD12X22TZ is a professional grade 12 in. x 22 in. parallel blade damper engineered for precise zone control in high performance forced air systems. Built with a rigid extruded aluminum frame and reinforced corners, this rectangular damper utilizes a power closed spring return open logic, serving as a fail safe solution that maintains airflow in the event of a power loss. The synchronous motor is mounted on the 22 inch side, operating on